This paper surveys the most important recent debates within the ethics of war. Sections 2 and 3 examine the principles governing the resort to war (jus ad bellum) and the principles governing conduct in war (jus in bello). In Section 4, we turn to the moral guidelines governing the ending and aftermath of war (jus post bellum). Finally, in Section 5 we look at recent debates on whether the jus ad bellum and the jus in bello can be evaluated independently (...) of each other. (shrink)

Forced choices between rescuing imperilled persons are subject to a presumption of equality. Unless we can point to a morally relevant difference between these persons' imperilments, each should get an equal chance of rescue. Sometimes, this presumption is overturned. For example, when one imperilled person has wrongfully caused the forced choice, most think that this person (rather than an innocent person) should bear the harm. The converse scenario, in which a forced choice resulted from the supererogatory action of one of (...) the imperilled people, has received little attention in distributive ethics. I argue that, sometimes, we need not offer equal chances in these cases either. When the supererogatory act places the initially imperilled person under a reciprocal duty to bear risks for the supererogatory agent's sake in the forced choice, we may fulfil this duty for them if they are unable to do it themselves, by favouring the supererogatory agent. (shrink)

This article presents a new understanding of the problem of cosmopolitan motivation in war, comparing it to the motivational critique of social justice cosmopolitanism. The problem of cosmopolitanism’s “motivational gap” is best interpreted as a political one, not a meta-ethical or ethical one. That is, the salient issue is not whether an individual soldier is able to be motivated by cosmopolitan concerns, nor is it whether being motivated by cosmopolitanism would be too demanding. Rather, given considerations of legitimacy in the (...) use of political power, a democratic army has to be able to motivate its soldiers to take on the necessary risks without relying on coercion alone. Patriotic identification offers a way to achieve this in wars of national defense, but less so in armed humanitarian interventions (AHIs). Two potential implications are that either AHIs should be privatized or that national armies should be transformed to become more cosmopolitan. (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)

Judith Jarvis Thomson recently argued that it is impermissible for a bystander to turn a runaway trolley from five onto one. But she also argues that a trolley driver is required to do just that. We believe that her argument is flawed in three important ways. She fails to give proper weight to (a) an agent¹s claims not to be required to act in ways he does not want to, (b) impartiality in the weighing of competing patient-claims, and (c) the (...) role of patient-claims in determining agent-duties. All three of these failures can be understood in terms of what we call the Mechanics of Claims, an approach we develop for identifying and balancing competing claims in determining rights. Using that framework, one can see both why Thomson's most recent argument is mistaken, and how to think more clearly about deontological choices generally. (shrink)

Journal of Social Philosophy, EarlyView.

David Rodin denies that defensive wars against unjust aggression can be justified if the unjust aggression limits itself, for example, to the annexation of territory, the robbery of resources or the restriction of political freedom, but would endanger the lives, bodily integrity or freedom from slavery of the citizens only if the unjustly attacked state actually resisted the aggression. I will argue that Rodin's position is not correct. First, Rodin's comments on the necessity condition and its relation to an alleged (...) "duty to retreat" misinterpret the law, and a correct interpretation of the law is not only compatible with, but implies a permission to resist the "bloodless invader," and this is also the correct view from the perspective of morality. Second, Rodin's remarks on the proportionality of self-defense against conditional threats focus on physical or material harm but implausibly ignore the severity of the violations of autonomy and of the socio-legal or moral order that such conditional threats involve. Third, I will address Rodin's claim that defensive wars against "political aggression" are disproportionate because they risk the lives of those defended in an attempt to secure lesser interests. I will argue that this take on proportionality misses the point in an important respect, namely by confusing wide and narrow proportionality, and makes unwarranted assumptions about the alleged irrationality or impermissibility of incurring or imposing lethal risks to safeguard less vital interests. Next, I will also show that while Rodin talks of a "myth of national self-defense" and of the necessity of moving beyond traditional just war theory and international law, it is actually his interpretation of just war theory and international law that weaves myths. Finally, I will argue that Rodin's views on national self-defense on the one hand, and "war as law enforcement" on the other, are incoherent. (shrink)

According to the dominant position in the just war tradition from Augustine to Anscombe and beyond, there is no "moral equality of combatants." That is, on the traditional view the combatants participating in a justified war may kill their enemy combatants participating in an unjustified war - but not vice versa (barring certain qualifications). I shall argue here, however, that in the large number of wars (and in practically all modern wars) where the combatants on the justified side violate the (...) rights of innocent people ("collateral damage"), these combatants are in fact liable to attack by the combatants on the unjustified side. I will support this view with a rights-based account of liability to attack and then defend it against a number of objections raised in particular by Jeff McMahan. The result is that the thesis of the moral equality of combatants holds good for a large range of armed conflicts while the opposing thesis is of very limited practical relevance. (shrink)

May lethal autonomous weapons systems—‘killer robots ’—be used in war? The majority of writers argue against their use, and those who have argued in favour have done so on a consequentialist basis. We defend the moral permissibility of killer robots, but on the basis of the non-aggregative structure of right assumed by Just War theory. This is necessary because the most important argument against killer robots, the responsibility trilemma proposed by Rob Sparrow, makes the same assumptions. We show that the (...) crucial moral question is not one of responsibility. Rather, it is whether the technology can satisfy the requirements of fairness in the re-distribution of risk. Not only is this possible in principle, but some killer robots will actually satisfy these requirements. An implication of our argument is that there is a public responsibility to regulate killer robots ’ design and manufacture. (shrink)

If the resources used to wage wars could be spent elsewhere and save more lives, does this mean that wars are unjustified? This article considers this question, which has been largely overlooked by Just War Theorists and pacifists. It focuses on whether the opportunity costs of war lead to a form of pacifism, which it calls ‘Opportunity Costs Pacifism’. The article argues that Opportunity Costs Pacifism is, at the more ideal level, compelling. It suggests that the only plausible response to (...) Opportunity Costs Pacifism applies in highly nonideal circumstances. This has major implications for Just War Theory and pacifism since it is only at the highly nonideal level that war can be justified. (shrink)

This article considers the duty to undertake humanitarian intervention. It first examines the arguments for the duty to intervene and questions the possibility of supererogatory humanitarian intervention. It then considers the leading objections to this duty which, it is argued, are largely unpersuasive. In the final section, the article considers the duty to intervene in the context of the responsibility to protect doctrine, which provides the framework within which debates about humanitarian intervention now in large part occur.

It is generally agreed that using lethal or otherwise serious force in self-defense is justified only when three conditions are satisfied: first, there are some grounds for the defender to give priority to his own interests over those of the attacker (whether because the attacker has lost the protection of his right to life, for example, or because of the defender’s prerogative to prefer himself to others); second, the harm used is proportionate to the threat thereby averted; third, the harm (...) is necessary to avert that threat. The first and second conditions have been exhaustively discussed, but the third has been oddly neglected. Meanwhile a prominent school of thought has arisen, in the ethics of war, which seeks to ground the justification of killing in war in principles of individual self-defense. They too have failed to offer any substantive analysis of necessity, while at the same time appealing to it when it suits them to do so. In this paper, I attempt a detailed analysis of the necessity constraint on defensive force, and explore the implications of that analysis for the attempt to transpose principles of individual self-defense into the context of warfare. (shrink)

Why does it matter that those who fight wars be authorized by the communities on whose behalf they claim to fight? I argue that lacking authorization generates a moral cost, which counts against a war's proportionality, and that having authorization allows the transfer of reasons from the members of the community to those who fight, which makes the war more likely to be proportionate. If democratic states are better able than non-democratic states and sub-state groups to gain their community's authorization, (...) this means that some wars will be proportionate if fought by democracies, disproportionate if not. (shrink)

This paper challenges one line of argument which has been advanced to justify imposing risks of collateral harm on prospective beneficiaries of armed humanitarian interventions. This argument - the ‘Beneficiary Principle’ - holds that non-liable individuals’ immunity to being harmed as a side effect of just armed humanitarian interventions may be diminished by their prospects of benefiting from the intervention. Against this, I defend the view that beneficiary status does not morally distinguish beneficiaries from other non-liable individuals in such a (...) way as to permit exposing them to greater risks of being harmed. The argument proceeds in four steps. I first show that the BP can neither be grounded in liability-based nor in lesser-evil justifications for harming. I then argue that a standalone justification for unintended harming based on beneficiary status would face at least two critical challenges. The first concerns the BP’s applicability to collectives; the second questions the normative weight we can plausibly ascribe to beneficiary status when beneficiaries are such by virtue of being victims of wrongful threats of harm. I argue that standing to benefit is morally irrelevant when the benefit consists in the mitigation or prevention of wrongful harms, and consequently suggest that the BP may only serve as a distributive principle in allocating risks of harm if it is disambiguated in a number of critical aspects and applied in a more narrowlydefined set of circumstances. (shrink)

Since the beginning of UN peace operations, there has been discussion as to exactly how they should be carried out. Thus far, a just theory of UN peacekeeping operations has not yet been formed, in the way a Theory of Just War for waging war or a theory of police ethics for law enforcement in a peace context had been formed. The article discusses what a justified risk distribution between UN peacekeepers and local civilians should be. One of the points (...) of criticism of UN peacekeeping missions is the lack of protection of the local population in the course of an escalating situation. Familiar examples are the traumas of Rwanda (1994) and Srebrenica (1995). Discussing differences between UN peacekeeping missions, warfare, and law enforcement, it appears that peacekeepers have more in common with law enforcers than with combatants during wartime. Through the method of analogy and by applying some typically military ethics principles, the moral status of the UN peacekeepers is analyzed. Finally, a risk distribution analysis between UN peacekeepers and the local population is carried out, by offering a concise overview by philosophers of arguments for and against taking fewer risks by peacekeepers. The analysis reveals important deontological and consequentialist arguments. Taking also into consideration that transferring more risk to the peacekeeping troops alone does not mandatory lead to less exposure to risk of the vulnerable and innocent local civilians, it can be concluded that a more practical, virtuous, responsible risk calculation will be necessary at that point to find the best risk distribution. (shrink)

Drawing on insights of thinkers in the natural rights tradition, Draper analyzes numerous hypothetical cases including those involving a runaway trolley, then seeks to determine if killing civilians in war is ever justified. In his consideration of this issue he avoids appealing to the principle of double effect. Having considered hypothetical cases at length, he leaves it to others to decide if any option to go to war is justifiable. In this regard he himself is sceptical.

War should be understood as an actual, intentional and widespread armed conflict between political communities. Thus, fisticuffs between individual persons do not count as a war, nor does a gang fight, nor does a feud on the order of the Hatfields versus the McCoys. War is a phenomenon which occurs only between political communities, defined as those entities which either are states or intend to become states (in order to allow for civil war). Classical war is international war, a war (...) between different states, like the two World Wars. But just as frequent is war within a state between rival groups or communities, like the American Civil War. Certain political pressure groups, like terrorist organizations, might also be considered “political communities,” in that they are associations of people with a political purpose and, indeed, many of them aspire to statehood or to influence the development of statehood in certain lands. (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)

Przemocy jest coraz mniej – zarówno w czasie pokoju, jak i podczas wojen. Na przykładzie trzech konfliktów zbrojnych z ostatnich lat zastanawiam się, czy decydenci powinni prowadzić działania zbrojne w taki sposób, by zminimalizować całkowitą liczbę ofiar. Pokazuję, że ani obowiązujące obecnie normy prawa międzynarodowego, ani osądy moralne na temat dopuszczalności stosowania przemocy nie wymagają od decydentów ograniczania całkowitej liczby ofiar konfliktów zbrojnych w każdym przypadku.