Just War Theory

Victor Tadros thinks the idea that in a conflict both sides may permissibly use force should (typically) be rejected. Thus, he thinks that two shipwrecked persons should not fight for the only available flotsam (which can only carry one person) but instead toss a coin, and that a bomber justifiably attacking an ammunitions factory must not be counterattacked by the innocent bystanders he endangers. I shall argue that Tadros’s claim rests on unwarranted assumptions and is also mistaken in the light (...) of the moral reasoning that he himself offers in support of his ‘means principle’. (shrink)

Kieran Oberman argues that there is no such thing, in realistic circumstances, as an optional war, i.e. a war that it is permissible for a state to wage, but not obligatory. Regarding a central kind of war – humanitarian intervention – this is due to what Oberman calls the Cost Principle, which says that states may not impose humanitarian costs on their citizens that those citizens do not have independent humanitarian obligations to meet. Essentially, this means that if the seriousness (...) of a humanitarian crisis is sufficient to justify imposing a certain level of cost, it must be serious enough to ground a genuine obligation to intervene. This paper offers three cases where, even if we accept the Cost Principle, war may be reasonably described as optional. These include the state’s moral relationship to amassing support for voluntary contributions to a war that would otherwise exceed the threshold established by Cost Principle (the Voluntary War); a war where it is uncertain whether costs will exceed the threshold (the Forever War); and two wars whose costs would individually fall below the threshold, but which would collectively fall above it. While none of these examples is conclusive, I conclude that Oberman must defend some further, contestable moral claims to establish that the optional humanitarian war is a myth. The Cost Principle alone does not get us there. (shrink)

A brief overview of Autonomous Weapon Systems (AWS) and their different levels of autonomy is provided, followed by a discussion of the risks represented by these systems under the light of the just war principles and insights from research in cybersecurity. Technological progress has brought about the emergence of machines that have the capacity to take human lives without human control. These represent an unprecedented threat to humankind. This commentary starts from the example of chemical weapons, now banned worldwide by (...) the Geneva protocol, to illustrate how technological development initially aimed at the benefit of humankind has, ultimately, produced what is now called the “weaponization of Artificial Intelligence” (AI). We are led to conclude that AWS fail the discrimination principle, and that the only way of mitigating the risk they represent to humankind is the rapid negotiation of treaties for the implementation of an international zero-tolerance policy against the development and/or deployment of autonomous weapon systems. Given that scientific research on AWS is altogether lacking in the public domain, the viewpoint here is based on common sense rather than scientific evidence. Yet, the implications of the potential weaponization of our work as scientists, especially in the field of AI, are reaching further than we may think. The potential consequences of the deployment of AWS for citizen stakeholders are incommensurable. This viewpoint points towards good reasons why we need to raise awareness of the threats represented by AWS, and legal policies to ensure that these threats will not materialize. (shrink)

This paper argues that there is a significant moral difference between force applied against (imminent) attackers on the one hand and force applied against “threatening” people who are not (imminent) attackers on the other. Given that there is such a difference, one should not blur the lines by using the term “self-defense” (understood as including other-defense) for both uses of force. Rather, only the former is appropriately called self-defense, while for the latter, following German legal terminology, the term “justifying defensive (...) emergency” will be used here. The two justifications are not governed by the same criteria and thus lead to different results. The paper will proceed by providing first, in section (1), a brief sketch of the contours of the self-defense justification, putting particular emphasis on the necessity criterion. On the account presented here, the necessity criterion of the self-defense justification is particularly harsh on the aggressor (and thus not to be interpreted as literally requiring the employment of “the mildest means”) and its applicability is only triggered by an (imminent) attack, not by other kinds of threats. Section (2) will then further explain the differences between self-defense and justifying defensive emergency. A particularly important difference is that people who are subjected to justified self-defense cannot permissibly defend themselves, while people who are subjected to (extremely harmful or even lethal) justified defensive emergency measures can. Thus, in this latter case we have a “moral equality” (of sorts) of the involved parties: they can permissibly use force against each other. Section (3) will list and defend some conditions that a successful argument against the imminence requirement of the self-defense justification has to satisfy. In the light of these conditions, sections (4) to (7) will discuss a number of objections that have been adduced against the imminence requirement as well as proposals that have been made in support of alternative accounts. It will be argued that all these objections and proposals fail. Section (8) will provide a number of thought experiments in support of the claim that the harsh necessity criterion of the self-defense justification is only triggered by imminence while force against non-imminent threats can be justified with the help of the justifying emergency exemption, as well as for the claim that the justifying emergency exemption puts the person using preventive force against non-imminent threats on a shorter leash and makes him liable to counter-measures. Section (9) will explain the rationale for tying the applicability of the harsh necessity criterion of the self-defense justification to imminent attacks. Section (10) will discuss some special cases and show why they do not undermine the normative validity of this tie. (shrink)

Rights forfeiture or liability are not a path to the permissibility of self-defense (not even barring extraordinary circumstances), and the necessity condition is not intrinsic to justified self-defense. Rather, necessity in the context of justification must be distinguished from necessity in the context of rights forfeiture. While innocent aggressors only forfeit their right against necessary self-defense, culpable aggressors also forfeit, on grounds of a principle of reciprocity, certain rights against unnecessary self-defense. Yet, while culpable aggressors would therefore not be wronged (...) by certain unnecessary defensive means, the use of such means against them would still not be justified. The underlying rationale of this necessity requirement lies not in the rights of the aggressor, but in an agent-relative requirement to take fair precautions against violating the rights of the innocent. This concern is also expressed in the necessity criterion defended and formulated in this paper, which is very harsh on aggressors. To wit, the necessity condition for justified self-defense must not be interpreted as requiring the employment of literally the least harmful means or of means that the defender reasonably believes to be, literally, the least harmful ones. What he must believe about the properties and possible effects of the means he employs is something that is much less demanding. Finally, the necessity condition of justified self-defense is also harsh (on the aggressor) in not implying a “success condition” worth its name. (shrink)

I argue that rights-forfeiture by itself is no path to permissibility at all (even barring special circumstances), neither in the case of self-defense nor in the case of punishment. The limiting conditions of self-defense, for instance – necessity, proportionality (or no gross disproportionality), and the subjective element – are different in the context of forfeiture than in the context of justification (and might even be absent in the former context). In particular, I argue that a culpable aggressor, unlike an innocent (...) aggressor, forfeits rights against proportionate defense, including unnecessary defense (as well as rights against the infliction of proportionate non-defensive harm). Yet, I demonstrate that this stance need not lead to the abandonment of the necessity condition of justified self-defense in the case of a culpable aggressor. Since justification and liability are not the same, there is no reason to assume that the necessity condition of justified self-defense must be explained under an appeal to the aggressor’s rights. Parallel arguments apply to the other limiting conditions of permissible self-defense as well as to the limiting conditions of permissible punishment. Accordingly, I also sketch alternative explanations of the proportionality requirement and the subjective element. All these alternative explanations appeal to a principle of precaution: instead of explaining the unjustifiability of unnecessarily harming a culpable attacker or wrongdoer by an appeal to the rights of the attacker or wrongdoer himself, one can also, and better, explain it by a requirement to take reasonable precautions against violating the rights of innocent people. (shrink)

McMahan’s own example of a symmetrical defense case, namely his tactical bomber example, opens the door wide open for soldiers to defend their fellow-citizens (on grounds of their special obligations towards them) even if as part of this defense they target non-liable soldiers. So the soldiers on both sides would be permitted to kill each other and, given how McMahan defines “justification,” they would also be justified in doing so and hence not be liable. Thus, we arrive, against McMahan’s intentions, (...) at a moral equality of combatants. In addition, his own account of liability cannot deal adequately with symmetrical defense cases in the first place. This undermines his presupposition that justification defeats liability, which is central to his defense of the moral inequality of combatants. I shall argue that McMahan’s attempts to counter these objections fail and that therefore his general claim of the moral inequality of combatants remains unpersuasive. (shrink)

Christopher J. Finlay claims “that a principle of moral or legitimate authority is necessary in just war theory for evaluating properly the justifiability of violence by non-state entities when they claim to act on behalf of the victims of rights violations and political injustice.” In particular, he argues that states, unlike non-state actors, possess what he calls “Lesser Moral Authority.” This authority allegedly enables states to invoke “the War Convention,” which in turn entitles even individual soldiers on the aggressive side (...) to use military violence against soldiers defending the victim state. Non-state actors, in contrast, have to fulfill more stringent requirements. If they do not, then even their attacks on military personnel can properly be called "terrorist." In the following I will argue that Finlay’s attempt to show the importance of the legitimate authority criterion of just war theory and to demonstrate that non-state violence has to satisfy heavier burdens of justification than state violence fails for a number of reasons: his claim that defenders would wrong victims if they defended them against their will is mistaken, he overlooks the fact that non-state agents need not claim to fight on someone’s behalf, the full moral authority he mentions is redundant, the powers he ascribes to “Lesser Moral Authority” are, depending on interpretation, either morally irrelevant or nonexistent, and his claim that granting states “Lesser Moral Authority” is beneficial from a “moral pragmatic” point of view while granting the same authority to non-state actors is not, is unwarranted. (shrink)

The first wave of philosophical work on global justice focused largely on the distribution of economic resources, and on the development or reformation of institutions relevant thereto. More recently, however, the horizon has broadened significantly, to also include a concern with the global spread of the right to live under reasonable legal institutions and representative forms of government (cf. “a human right to democracy”). Thus, while the first wave was focused primarily on international (non-territorial) institutions, later work has also brought (...) critical focus to bear on domestic institutions traditionally assumed to be protected by rights of state sovereignty. This naturally raises the question of whether, when, and how the international community can coercively intervene in issues falling under assumed to fall under domestic jurisdiction. Many theorists of global justice will accept, however reluctantly, that coercive means such as military force may be used (even unilaterally, if necessary) to halt a government’s mass atrocities against its civilian population (so-called “humanitarian intervention”). They are, however, for the most part firmly opposed to the use of military force as a tool to force regime change or democratic reform. I will discuss the viability of this stance along two dimensions: (i) can we draw a morally relevant distinction between humanitarian intervention and regime change policies? (ii) can we draw a morally relevant distinction between the use of military force as a policy tool and the use of other kinds of coercive measures such as economic sanctions? (shrink)

Throughout the Yemeni Civil War, western states have supplied weapons used in the indiscriminate bombing campaign conducted by the Saudis. In defence of their actions, British politicians have argued that they are exchanging weapons for influence, and using the influence obtained to encourage compliance with humanitarian law. An additional premise in the argument is that Britain is using its influence more benignly than alternative suppliers would use theirs if Britain were not on the scene. The idea is that Britain is (...) substituting itself for other, less scrupulous, interveners. I argue that, regardless of whether British substitution intervention could be justified in this way…, it is not in fact justified, because Britain has not plausibly used its influence to secure an amount of good sufficient to offset the various harms that its actions have created (or to discharge the expanded duties of rescue that greater influence entails). In addition, the article identifies the various forms that substitution intervention can take, and shows how the concept reveals hitherto neglected reasons to both support and oppose intervention in foreign conflicts. (shrink)

I argue that, if drones make waging war easier, the reason why they do so may not be the one commonly assumed within the philosophical debate – namely the promised reduction in casualties on either side – but a more complicated one which has little to do with concern for one’s own soldiers or, for that matter, the enemy; and a lot more to do with the political intricacies of international relations and domestic politics; I use the example of the (...) Obama Administration’s drone policies to illustrate this argument. My point is meant to have wider methodological significance: philosophy can make an important contribution to this and related applied debates; but it is not by artificially – and optimistically – simplifying realities on the ground that philosophers can be of help. (shrink)

Wars are large-scale conflicts between organized groups of belligerents, which involve suffering, devastation, and brutality unlike almost anything else in human experience. Whatever one’s other beliefs about morality, all should agree that the horrors of war are all but unconscionable, and that warfare can be justified only if we have some compel- ling account of what is worth fighting for, which can justify contributing, as individu- als and as groups, to this calamitous endeavour. Although this question should obviously be central (...) to both philosophical and politi- cal discussion about war, it is at the forefront of neither. In recent years, philosophical discussion of warfare has bloomed, but the debate has focused on whom we may kill, on the assumption that our aims are justified.1 Political debate, meanwhile, is more concerned with matters of prudence, international law, and public justification, than with reassessing what is worth fighting for. For wars of intervention to halt or prevent massive humanitarian crises, this gap is not so troubling. When warfare is the only means to prevent the mass killing or enslavement of the innocent, the purposes of military force are clear enough (though undoubtedly many other problems remain). The problem is more pressing, how- ever, for the justification of national defence.3 Although common-sense morality and international law view national defence as the paradigm case of justified warfare, grounding this consensus is surprisingly difficult.4 We typically believe that any state is justified in using lethal force to protect its territory against any form of uninvited military incursion by any other state. And yet we lack a good argument to explain why this should be so. In this chapter, I explain why one familiar and otherwise plausible approach to the justification of killing in war cannot adequately ground common-sense views of permissible national defence.5 Reductionists believe that justified warfare reduces to an aggregation of acts that are justified under ordinary principles of interpersonal morality.6 The standard form of reductionism focuses on the principles governing killing in ordinary life, specifically those that justify intentional killing in self- and other-defence, and unintended but foreseen (for short, collateral) killing as a lesser evil. Justified warfare, on this view, is no more than the coextension of multiple acts justified under these two principles. Reductionism is the default philosophical approach to thinking through the ethics of killing in war. It makes perfect sense to ask what principles govern permissible kill- ing in general, before applying them to the particular context of war. If it cannot deliver a plausible set of conclusions about when national defence is permitted, then we must either revise our beliefs about which conclusions count as plausible, or else face the significant challenge of developing a different theoretical model for justifying war- fare—an exceptionalist model, which views war as an exception to the regular moral landscape, to which principles apply which apply to nothing else but war.7 We must show, in other words, that there is something worth fighting for in wars of national defence, which is not engaged when we use force in any other context. The chapter proceeds as follows. Section 2.2 sets out the argument against reduc- tionism.8 Section 2.3 considers and rebuts one common response to the argument, which has often been thought sufficient grounds to disregard its conclusion. Section 2.4 then asks whether a modified reductionism would survive unscathed by the argu- ment. Finally, section 2.5 sets out some desiderata on a plausible exceptionalist alterna- tive. Section 2.6 concludes. (shrink)

To what extent do the moral principles of just war theory lend themselves to providing an account of the moral and political responsibility of citizens in general, and of public intellectuals in particular, in times of war? An analysis of Michael Walzer’s thought opens promising avenues for answering this question. It will be necessary, first of all, to re-examine the classic distinction between combatants and noncombatants – a thesis that Walzer defended but that several philosophers have criticized in recent years. (...) The problem will then be to construe citizens’ moral and political responsibility in times of war, and also to reflect on the precise role of a very specific category of civil society, namely public intellectuals. We will see that this responsibility does not appear sufficient for abolishing the distinction between combatants and noncombatants, which must be maintained. However, this responsibility must be examined more precisely, especially its relation to public debate and the role that it confers on public intellectuals in that debate. Using Walzer’s moral arguments pertaining to war while taking account of the objections that have been made to them, it is possible to read in Walzer’s thought a weak version of the responsibility of citizens and, conversely, a strong version of the responsibility of public intellectuals, in times of war. (shrink)

What one is ultimately interested in with regard to ‘just cause’ is whether a specific war, actual or potential, is justified. I call this ‘the applied question’. Answering this question requires knowing the empirical facts on the ground. However, an answer to the applied question regarding a specific war requires a prior answer to some more general questions, both descriptive and normative. These questions are: What kind of thing is a ‘just cause’ for war (an aim, an injury or wrong (...) suffered, or something different altogether)? I call this ‘the formal question’. Then there is what I call the ‘the general substantive question’. Depending on the previous answer to the formal question, the general substantive question can be formulated as: ‘Which causes are just?’ or as ‘Under what conditions is there a just cause?’ A final question, which has recently elicited increased interest, is what I call ‘the question of timing’: does the ‘just cause’ criterion only apply to the initiation of a war or also to the continuation of a war, that is, can a war that had a just cause at the beginning lose it at some point in its course (and vice versa)? I argue that a just cause is a state of affairs. Moreover, the criterion of just cause is not independent of proportionality and other valid jus ad bellum criteria. One cannot know whether there is a just cause without knowing whether the other (valid) criteria (apart from ‘right intention’) are satisfied; and this account has certain theoretical and practical advantages. As regards the general substantive question, I argue that all kinds of aims can, in principle, be legitimately pursued by means of war, even aims that might sound dubious at first, like vengeance or the search for glory. Thus, the pursuit of such aims does not make the war disproportionate or deprive it of just cause. As regards the question of timing, I argue that the criteria of jus ad bellum apply throughout the war, not only at the point of its initiation. While starting a war at t1 might be justified, continuing it at time t2 might be unjustified (and vice versa), and this insight does not require an addition to jus ad bellum but is already contained in it. (shrink)

Is there is a moral obligation to militarily intervene in another state to stop a genocide from happening (if this can be done with proportionate force)? My answer is that under exceptional circumstances a state or even a non-state actor might have a duty to stop a genocide (for example if these actors have promised to do so), but under most circumstances there is no such obligation. To wit, “humanity,” states, collectives, and individuals do not have an obligation to make (...) such promises in the first place or to create institutions that would impose a legal obligation of intervention upon them. Nor do states or persons or humanity “collectively” have – originally, without specifically creating such duties by contracts or promises – any pro tanto or special duties to save strangers at considerable cost to themselves or their own citizens (including their soldiers). That is, these costs do not merely override a duty to intervene, but rather there is no such duty to begin with – as shown by the fact that in such cases of non-intervention agents would not owe those they let die any compensation: if I do not save someone’s life because saving him would have cost me my arm or would have come with a high risk of losing my own life or would have forced me to kill innocent bystanders, I do not owe this person compensation. Thus the point of this chapter is that there is no “natural” or “general” or “original” duty to militarily intervene (or to create a legal obligation) to stop a genocide. I will consider and refute a number of arguments to the contrary, for example by Lango, Tan, and Pattison. (shrink)

Reply to commentators: Symposium on the winner of the 2019 NASSP Book Award Prize: Yvonne Chiu, *Conspiring with the Enemy: The Ethic of Cooperation in Warfare* (Columbia University Press, 2019).

Most of us believe that partiality applies in a broad range of relationships. One relationship on which there is much disagreement is co-nationality. Some writers argue that co-national partiality is not justified in certain cases, like killing in war, since killing in defense of co-nationals is intuitively impermissible in other contexts. I argue that this approach overlooks an important structural feature of partiality—namely, that its scope is sometimes restricted. In this essay, I show how some relationships that generate reasons of (...) partiality are restricted in scope—that is, they generate reasons within particular contexts or with respect to particular goods. I then argue that co-national partiality is scope restricted. I then show how this fact helps proponents of co-national partiality overcome the aforementioned objection to its application in cases like war. (shrink)

Autonomous Weapons Systems (AWS) have not gained a good reputation in the past. This attitude is odd if we look at the discussion of other-usually highly anticipated-AI-technologies, like autonomous vehicles (AVs); whereby even though these machines evoke very similar ethical issues, philosophers' attitudes towards them are constructive. In this article, I try to prove that there is an unjust bias against AWS because almost every argument against them is effective against AVs too. I start with the definition of "AWS." Then, (...) I arrange my arguments by the Just War Theory (JWT), covering jus ad bellum, jus in bello and jus post bellum problems. Meanwhile, I draw attention to similar problems against other AI-technologies outside the JWT framework. Finally, I address an exception, as addressed by Duncan Purves, Ryan Jenkins and Bradley Strawser, who realized the unjustified double standard, and deliberately tried to construct a special argument which rules out only AWS. (shrink)

Academics working on military ethics and serving military personnel rarely have opportunities to talk to each other in ways that can inform and illuminate their respective experiences and approaches to the ethics of war. The workshop from which this paper evolved was a rare opportunity to remedy this problem. Our conversations about First Lieutenant (1LT) Portis’s experiences in combat provided a unique chance to explore questions about the relationship between oversight, accountability, and the idea of moral risk in military operations. (...) In this paper, we outline a particular experience of 1LT Portis’s that formed the basis of our discussions, before elucidating the ethical issues this experience raised. In particular, we see 1LT Portis’s experience as, first, illustrative of the problem of moral risk – when military personnel are placed in situations of moral temptation. The problem of moral risk, we propose, is best understood through the framework of the military’s duty of care. Second, we see his experience as highlighting tensions within the dominant moralized warrior model of the military profession. What we call a toxic warrior identity — a distorted form of the moralized warrior identity — can negatively affect the attitudes of military personnel toward rules, policies, procedures, and accountability mechanisms, particularly in relation to non-combat related roles and duties and when leaders must choose between competing bureaucratic demands. We see 1LT Portis’s experience as illustrative of these tensions, yet his experiences also highlight important concerns about the impact of increasing bureaucratic demands on military functioning. In the conclusion, we address the need to balance concerns about toxic warrior identity with legitimate criticisms of overly demanding bureaucracy and suggest avenues for further research on this issue. (shrink)

Do we have moral duties to people in distant parts of the world? If so, how demanding are these duties? And how can they be reconciled with our obligations to fellow citizens? -/- Every year, millions of people die from poverty-related causes while countless others are forced to flee their homes to escape from war and oppression. At the same time, many of us live comfortably in safe and prosperous democracies. Yet our lives are bound up with those of the (...) poor and dispossessed in multiple ways: our clothes are manufactured in Asian sweatshops; the oil that fuels our cars is purchased from African and Middle Eastern dictators; and our consumer lifestyles generate environmental changes that threaten Bangladeshi peasants with drought and famine. These facts force us to re-evaluate our conduct and to ask whether we must do more for those who have less. -/- Helping students to grapple with big questions surrounding justice, human rights, and equality, this comprehensive yet accessible textbook features chapters on a variety of pressing issues such as Immigration, International Trade, War, and Climate Change. Suitable for undergraduate and graduate students alike, the book also serves as a philosophical primer for politicians, activists, and anyone else who cares about justice. (shrink)

Most philosophers writing on the ethics of war endorse “reductivist individualism,” a view that holds both that killing in war is subject to the very same principles of ordinary morality ; and that morality concerns individuals and their rights, and does not treat collectives as having any special status. I argue that this commitment to individualism poses problems for this view in the case of national defense. More specifically, I argue that the main strategies for defending individualist approaches to national (...) defense either fail by their own lights or yield deeply counterintuitive implications. I then offer the foundations for a collectivist approach. I argue that such an approach must do justice to the collective goods that properly constituted states make possible and protect through certain acts of defensive war; and that any such picture of national defense must make room for some form of national partiality. (shrink)

In this chapter, I add to the new body of philosophical literature that addresses African approaches to just war by reflecting on some topics that have yet to be considered and by advancing different perspectives. My approach is two-fold. First, I spell out a foundational African ethic, according to which one must treat people’s capacity to relate communally with respect. Second, I derive principles from it to govern the use of force and violence, and compare and contrast their implications for (...) war with other recent African views and especially with some prominent accounts in contemporary Anglo-American philosophy. I argue that the approaches to military conflict prescribed by the Afro-communal ethic and its derivative principles differ, and in some prima facie plausible ways, from the views of thinkers that include Thomas Hurka, David Luban, Larry May, Jeff McMahan, and Michael Walzer. In particular, I conclude that the African perspectives ground some interesting and under-explored approaches to just causes for war that merit consideration, including the ideas that military conflict could in principle be justified in order to protect a people’s culture or to correct an aggressor’s vice. (shrink)

Provided that traditional jus ad bellum principles are fulfilled, military humanitarian intervention to stop large scale violations of human rights (such as genocide, crimes against humanity or war crimes) is widely regarded as morally permissible. In cases of “supreme humanitarian emergency”, not only are the victims morally permitted to rebel, but other states are also permitted to militarily intervene. Things are different if the human rights violations in question fall short of supreme humanitarian emergency. Because of the importance of respecting (...) political self-determination, in cases of “ordinary oppression”, we normally think that rebellion might be permissible, but not military humanitarian intervention. Thus, according to the received view, the conditions for the permissibility of intervention coincide with the conditions for the permissibility of revolution in cases of supreme humanitarian emergency, but not in cases of ordinary oppression. In cases of ordinary oppression there is an asymmetry between the conditions for the permissibility of revolution and intervention (call this the Asymmetry View). Should we accept the Asymmetry View? I answer this question by outlining an account of political self-determination and by illustrating the complex role that this notion should play in discussing the morality of revolution and intervention. (shrink)

To many, the idea of autonomous weapons systems (AWS) killing human beings is grotesque. Yet critics have had difficulty explaining why it should make a significant moral difference if a human combatant is killed by an AWS as opposed to being killed by a human combatant. The purpose of this paper is to explore the roots of various deontological concerns with AWS and to consider whether these concerns are distinct from any concerns that also apply to long- distance, human-guided weaponry. (...) We suggest that at least one major driver of the intuitive moral aversion to lethal AWS is that their use disrespects their human targets by violating the martial contract between human combatants. On our understanding of this doctrine, service personnel cede a right not to be directly targeted with lethal violence to other human agents alone. Artificial agents, of which AWS are one example, cannot understand the value of human life. A human combatant cannot transfer his privileges of targeting enemy combatants to a robot. Therefore, the human duty-holder who deploys AWS breaches the martial contract between human combatants and disrespects the targeted combatants. We consider whether this novel deontological objection to AWS forms the foundation of several other popular yet imperfect deontological objections to AWS. (shrink)

The “right intention” requirement, in the form of a requirement that the agent must have a justified true belief that the mind-independent conditions of the justification to use force are fulfilled, is not an additional criterion, but one that constrains the interpretation of the other criteria. Without it, the only possible interpretation of the mind-independent criteria is purely objectivist, that is, purely fact-relative. Pure objectivism condemns self-defense and just war theory to irrelevance since it cannot provide proper action guidance: it (...) is impractically demanding. This means that “revisionist” just war theories which base their doctrine of the moral inequality of combatants on the idea that objective justification defeats liability are irrelevant for the real world, where objective justification is virtually inaccessible. Moreover, only the right intention requirement in the form of a knowledge requirement, as opposed to requiring “good intentions” or “acceptable motivations,” can solve this problem. (shrink)

Although some claim that the term cyber war is merely metaphorical, there are good reasons to see cyber war as a form of warfare ‐ even if it is not war as we have hitherto known it. This poses the question whether the principles of the Just War Tradition, which claims to offer an alternative for pacifism and realism, apply to this specific kind of war too. This article argues that the jus in bello principles of discrimination and proportionality are (...) applicable, and that actually applying them would limit the harm cyber-attacks currently cause. Most cyber-attacks of recent years wrongly target civilians, and this amounts to a serious breach of these principles. The final part of this article looks at those who actually conduct the cyber-attacks, the cyber soldiers ‐ how do they fit into the military profession, and to what extent can we expect them to uphold the principles of Just War? (shrink)

Law and Morality at War offers a broadly instrumentalist defense of the authority of the laws of war: these laws serve combatants by helping them come closer to doing what they have independent moral reason to do. We argue that this form of justification sets too low a bar. An authority’s directives are not binding, on instrumental grounds, if the subject could, within certain limits, adopt an alternative, and superior, means of conforming to morality’s demands. It emerges that Haque’s argument (...) fails to vindicate the law’s authority over all combatants. (shrink)

Just war theory is currently dominated by two positions. According to the orthodox view, provided that jus in bello principles are respected, combatants have an equal right to fight, regardless of the justice of the cause pursued by their state. According to “revisionists” whenever combatants lack reasons to believe that the war they are ordered to fight is just, their duty is to disobey. I argue that when members of a legitimate state acting in good faith are ordered to fight, (...) they acquire a pro-tanto obligation to obey which does not depend for its validity on the justice of the cause being pursued. However, when the war is unjust, this obligation may be overridden, under certain conditions, by the obligation not to contribute to the unjustified killing of innocents. This is because the pro-tanto force of the duty to obey the law is best understood in terms of “presumptive”, rather than “exclusionary” reasons for action. This approach captures the insights of both the orthodox and the revisionist view, while avoiding the problems that afflict each of them. (shrink)

The suite of secretive national security programs initiated in the US since 9/11 has created debate not only about the merits of targeted killing, torture, secret detention, cyberwar, global signals intercepts, and data-mining, but about the very secrecy in which these programs were conceived, debated by government officials, and implemented. Law must be revealed to those who are expected to comply with its demands. Law is a mere pretext for coercion if the laws permitting the government to coerce people for (...) non-compliance are concealed. The purpose of this essay is to determine whether inhabitants of a liberal state—a type of state tracing the legitimacy of its coercive actions to the consent of the governed—also need to know the internal protocols and legal findings of the government agencies ostensibly serving them. To put this question another way, what, if anything, may government agencies in liberal states keep secret? (shrink)

A case study exploring the importance of compassion for enemies appealing to a series of targeting decisions, co-written with the senior Marine in Iraq in 2003-4.

In the United States, all military personnel swear to obey “the orders of the President of the United States and the orders of the officers appointed over me.” Military personnel must obey orders promptly in order to facilitate effective military functioning. Yet, obedience to orders has been associated with the commission of war crimes. Military personnel of all ranks have committed torture, rape, genocide, and murder under orders. “I was just following orders” (respondaet superior) is no longer accepted as a (...) complete defense to a charge of war crimes. In the words of the Nuremberg court: “The obedience of a soldier is not the obedience of an automaton. A soldier is a reasoning agent”. This means that military personnel cannot evade responsibility for their actions under orders. But when and under what conditions should military personnel disobey orders? If obedience is sometimes morally wrong, how can obedience be a military virtue? In this chapter I argue that the only plausible conception of military obedience as a virtue is reflective obedience: obedience governed and constrained by the ends of the military profession serving a legitimate state and by the laws of armed conflict. Section 1 explains the concept of obedience and outlines the idea of virtuous obedience. Section 2 explores when the military has legitimate authority to compel obedience. Section 3 concludes by exploring the limits on obedience that derive from the military’s status as a profession and the legitimacy of the military’s authority to issue orders. (shrink)

I argue that the lives of domestic and enemy civilians should not receive equal weight in our proportionality calculations. Rather, the lives of enemy civilians ought to be “partially discounted” relative to the lives of domestic civilians. We ought to partially discount the lives of enemy civilians for the following reason (or so I argue). When our military wages a just war, we as civilians vest our right to self-defense in our military. This permits our military to weigh our lives (...) more heavily. Before arguing for this view I first explain why recent accounts attempting to show the opposite – that enemy civilians ought to be weighed more heavily – are mistaken. (shrink)

In discussion surrounding the destruction of cultural heritage in armed conflict, one often hears two important claims in support of intervention to safeguard heritage. The first is that the protection of people and the protection of heritage are two sides of the same coin. The second is that the cultural heritage of any people is part of the common heritage of all humankind. In this article, I examine both of these claims, and consider the extent to which they align with (...) the current practices that they are intended to justify. (shrink)

In this chapter I aim to provide a moral-philosophical grounding for much of Nelson Rolihlaha Mandela’s life. I spell out a principled interpretation of ubuntu that focuses on its moral import, and then apply it to salient facets of Mandela’s 50+ struggle years, contending that they exemplify it in many ways. Specifically, I first address Mandela’s decisions to fight apartheid in the 1940s, to use violence in response to it in the 1950s and ‘60s, and to refuse to renounce the (...) use of violence during the 1970s and ‘80s. Then I consider his attempts to negotiate with the apartheid regime in the mid to late 1980s and his support for the Truth and Reconciliation Commission (TRC) in the 1990s. Along the way, I address some suggestions that elements of Mandela’s life failed to exhibit ubuntu, such as his alleged ‘neglect’ of his family and ‘betrayal’ of the black majority regarding economic justice. My conclusion is that one can make good sense of many of Mandela’s most important decisions, including the hard choices, during the fight against apartheid by appeal to a theoretical ethic of ubuntu. (shrink)

In a recent article Duncan Purves, Ryan Jenkins, and B. J. Strawser argue that in order for a decision in war to be just, or indeed the decision to resort to war to be just, it must be the case that the decision is made for the right reasons. Furthermore, they argue that this requirement holds regardless of how much good is produced by said action. In this essay I argue that their argument is flawed, in that it mistakes what (...) makes an agent morally good for what makes an act morally good. I argue that the main thrust of Purves et al.’s argument in fact undermines the conclusion they wish to draw, and that the reasons for one’s action do not make an in principle difference to the morality of actions in war. I further argue that this position undermines the traditional ad bellum just war constraint of right intention, and that the morality of actions in war is, at core, only concerned with outcomes. I conclude by clarifying that one’s reasons for action do in fact matter when deciding to enter war or kill in war, but only because one’s reasons significantly impact the way in which one acts. The purpose of this paper is to clear the theoretical space by showing why intentions/reasons do not in principle matter when assessing the morality of war (or killing), but this should not be taken as an argument that we should ignore intentions/reasons altogether. (shrink)

The principle of noncombatant immunity prohibits warring parties from intentionally targeting noncombatants. I explicate the moral version of this view and its criticisms by reductive individualists; they argue that certain civilians on the unjust side are morally liable to be lethally targeted to forestall substantial contributions to that war. I then argue that reductivists are mistaken in thinking that causally contributing to an unjust war is a necessary condition for moral liability. Certain noncontributing civilians—notably, war-profiteers—can be morally liable to be (...) lethally targeted. Thus, the principle of noncombatant immunity is mistaken as a moral (though not necessarily as a legal) doctrine, not just because some civilians contribute substantially, but because some unjustly enriched civilians culpably fail to discharge their restitutionary duties to those whose victimization made the unjust enrichment possible. Consequently, the moral criterion for lethal liability in war is even broader than reductive individualists have argued. (shrink)

Even in just wars we infringe the rights of countless civilians whose ruination enables us to protect our own rights. These civilians are owed compensation, even in cases where the collateral harms they suffer satisfy the proportionality constraint. I argue that those who authorize or commit the infringements and who also benefit from those harms will bear that compensatory duty, even if the unjust aggressor cannot or will not discharge that duty. I argue further that if we suspect antecedently that (...) we will culpably refrain from compensating those victims post bellum, then this makes satisfying the war’s proportionality constraint substantially more difficult at the outset of the war. The lesson here is that failing to take duties of compensation in war seriously constrains our moral permission to protect ourselves. (shrink)

Though the duties of care owed toward innocents in war and in civil life are at the bottom univocally determined by the same ethical principles, Bazargan-Forward argues that those very principles will yield in these two contexts different “in-practice” duties. Furthermore, the duty of care we owe toward our own innocents is less stringent than the duty of care we owe toward foreign innocents in war. This is because risks associated with civil life but not war (a) often increase the (...) expected welfare of the individuals upon whom the risk is imposed, (b) are often imposed with consent, and (c) are often imposed reciprocally. The conclusion—that we have a pro tanto reason for adopting a more stringent standard of risk imposition toward foreign innocents in war—has implications for not only what standards of risk we should adopt in war, but also how we should weigh domestic versus foreign civilian lives. (shrink)

In Chapter 7, “Dignity, Self-Respect, and Bloodless Invasions”, Saba Bazargan-Forward asks How much violence can we impose on those attempting to politically subjugate us? According to Bazargan-Forward, “reductive individualism” answers this question by determining how much violence one can impose on an individual wrongly attempting to prevent one from political participation. Some have argued that the amount of violence one can permissibly impose in such situations is decidedly sub-lethal. Accordingly, this counterintuitive response has cast doubt on the reductive individualist project. (...) Bazargan-Forward argues, however, that political subjugation involves an institutionally embodied form of disrespect that has been altogether missed. A proper appreciation of this sort of disrespect, he contends, morally permits much greater defensive violence against those attempting to politically subjugate us or others. (shrink)

The doctrine of the moral equality of combatants holds that combatants on either side of a war have equal moral status, even if one side is fighting a just war while the other is not. This chapter examines arguments that have been offered for and against this doctrine, including the collectivist position famously articulated by Walzer and McMahan’s influential individualist critique. We also explore collectivist positions that have rejected the moral equality doctrine and arguments that some individualists have offered in (...) its favor. We defend a non-categorical version of the moral equality doctrine, according to which combatants on either side of a just war sometimes (but not always) have equal moral status. On our view, some degree of culpability is necessary for liability, and non-culpable combatants may therefore sometimes remain non-liable even when they fight for an unjust cause. (shrink)

Modern analytical just war theory starts with Michael Walzer's defense of key tenets of the laws of war in his Just and Unjust Wars. Walzer advocates noncombatant immunity, proportionality, and combatant equality: combatants in war must target only combatants; unintentional harms that they inflict on noncombatants must be proportionate to the military objective secured; and combatants who abide by these principles fight permissibly, regardless of their aims. In recent years, the revisionist school of just war theory, led by Jeff McMahan, (...) has radically undermined Walzer's defense of these principles. This essay situates Walzer's and the revisionists’ arguments, before illustrating the disturbing vision of the morality of war that results from revisionist premises. It concludes by showing how broadly Walzerian conclusions can be defended using more reliable foundations. (shrink)

Contemporary just war theory is divided into two broad camps: revisionists and traditionalists. Traditionalists seek to provide moral foundations for something close to current international law, and in particular the laws of armed conflict. Although they propose improvements, they do so cautiously. Revisionists argue that international law is at best a pragmatic fiction—it lacks deeper moral foundations. In this article, I present the contemporary history of analytical just war theory, from the origins of contemporary traditionalist just war theory in Michael (...) Walzer's work to the revisionist critique of Walzer and the subsequent revival of traditionalism. I discuss central questions of methodology, as well as consider the morality of resorting to war and the morality of conduct in war. I show that although the revisionists exposed philosophical shortcomings in Walzer's arguments, their radical conclusions should prompt us not to reject the broad contemporary consensus, but instead to seek better arguments to underpin it. (shrink)

Interest in just war theory has boomed in recent years, as a revisionist school of thought has challenged the orthodoxy of international law, most famously defended by Michael Walzer [1977]. These revisionist critics have targeted the two central principles governing the conduct of war (jus in bello): combatant equality and noncombatant immunity. The first states that combatants face the same permissions and constraints whether their cause is just or unjust. The second protects noncombatants from intentional attack. In response to these (...) critics, some philosophers have defended aspects of the old orthodoxy on novel grounds. Revisionists counter. As things stand, the prospects for progress are remote. In this paper, we offer a way forward. We argue that exclusive focus on first-order moral principles, such as combatant equality and noncombatant immunity, has led revisionist and orthodox just war theorists to engage in “proxy battles.” Their first-order moral disagreements are at least partly traceable to second-order disagreements about the nature and purpose of political theory. These deeper disputes have been central to the broader discipline of political theory for several years; we hope that bringing them to bear on the ethics of war will help us move beyond the present impasse. (shrink)

Analytic just war theorists often attempt to construct ideal theories of military justice on the basis of intuitions about imaginary and sometimes outlandish examples, often taken from non-military contexts. This article argues for a sharp curtailment of this method and defends, instead, an empirically and historically informed approach to the ethical scrutiny of armed conflicts. After critically reviewing general philosophical reasons for being sceptical of the moral-theoretic value of imaginary hypotheticals, the article turns to some of the special problems that (...) this method raises for appraisals of warfare. It examines some of the hypothetical examples employed in the construction of Jeff McMahan’s revisionist just war theory, and finds that they sometimes stipulate incompre- hensible conditions, lead to argumentative impasses of diverging yet uncertain intuitions, and distract attention away from the real problems of war as we empirically know it. In contrast, empirical and historical studies of warfare rein- force the deep connections between facts and values, and compel theorists to face uncomfortable moral ambiguities. Perhaps most importantly, the analytic method of focusing on imaginary hypothetical examples can not only be distracting, but it can also be genuinely dangerous. Hence, the article pays special attention to the way in which a seemingly innocuous fiction like the famous Ticking Time Bomb scenario can come to frame a new paradigm of inhumanity in the treatment of prisoners of war. (shrink)

Just war scholars are increasingly focusing on the importance of jus post bellum – justice after war – for the legitimacy of military campaigns. Should something akin to jus post bellum standards apply to terrorist campaigns? Assuming that at least some terrorist actors pursue legitimate goals or just causes, do such actors have greater difficulty satisfying the prospect-of-success criterion of Just War Theory than military actors? Further, may the use of the terrorist method as such – state or non-state – (...) jeopardize lasting peace in a way that other violent, for instance military, strategies do not? I will argue that there appears to be little reason to believe that terrorist campaigns are in principle less able to secure or at least contribute to a lasting peace than military campaigns; quite to the contrary. Or, put differently, if terrorism is an unlikely method for securing peace, then war is an even more unlikely one. (shrink)

In international law and just war theory, war is treated as normatively and legally unique. In the context of international law, war’s special status gives rise to a specific set of belligerent rights and duties, as well as a complex set of laws related to, among other things, the status of civilians, prisoners of war, trade and economic relationships, and humanitarian aid. In particular, belligerents are permitted to derogate from certain human rights obligations and to use lethal force in a (...) far more permissive manner than is the case in other kinds of conflicts and in domestic law enforcement operations. Given war’s unique status, the task of defining war requires not just identifying the empirical features that are characteristic of war but explaining and justifying war’s special legal and moral status. In this chapter, I propose a definition of war that captures war’s unique features and can offer insights into when and how some forms of unarmed conflict could count as wars. (shrink)

A book review of Steve Clark's The Justification of Religious Violence.

The period known as the “War on Terror” has prompted a revival of interest in the idea of moral dilemmas and the problem of “dirty hands” in public life. Some contend that a policy of targeted killing of terrorist actors is (under specified but not uncommon circumstances) an instance of a dirty-handed moral dilemma – morally required yet morally forbidden, the least evil choice available in the circumstances, but one that nevertheless leaves an indelible moral stain on the character of (...) the person who makes the choice. In this chapter we argue that, while dirty hands situations do exist as a persistent problem of political life, it is generally a mistake to classify policies of target killing (such as the current US policy) as examples of dirty hands. Instead, we maintain, such policies, if justified at all, must ordinarily be justified under the more exacting standards of just war theory and its provisions for justified killing – in particular the requirement that (with limited and defined exceptions) non-combatants be immune from intentional violence. Understanding this distinction both clarifies the significance of dirty hands as a moral phenomenon and also forestalls a set of predictable and all-too-easy appropriations of the concept to domains it was never intended to address. (shrink)