Much philosophical attention has been paid to the question of whether, and why, one may divert a runaway trolley away from where it will kill five people to where it will kill one. But little attention has been paid to whether the reasons that ground a permission to divert thereby ground a duty to divert. This paper defends the Requirement Thesis, which holds that one is, ordinarily, required to act on lesser-evil justifications for harming for the sake of others. Cases (...) in which we have lesser-evil justifications of harming for the sake of others are rescue cases. Ordinarily, an agent is under a duty to rescue unless doing so imposes too great a cost on her, or violates someone else's rights. When neither of these defeating conditions obtain, one is required to rescue even if this involves causing harm to innocent people. (shrink)

Because the poorest people tend to die from easily preventable diseases, addressing poverty is a relatively cheap way to save lives. War, by contrast, is extremely expensive. This article argues that, since states that wage war could alleviate poverty instead, poverty can render war unjust. Two just war theory conditions prove relevant: proportionality and last resort. Proportionality requires that war does not yield excessive costs in relation to the benefits. Standardly, just war theorists count only the direct costs: the death (...) and destruction wrought by war. This article argues that it can sometimes be appropriate to add the opportunity costs of a failure to alleviate poverty. Last resort is the condition that there must be no better alternative means of achieving the same just end for which the war is waged. This article argues that there are some cases in which alleviating poverty may constitute a better alternative. These are cases in which the most fitting description of the just end for war is sufficiently general that poverty alleviation offers a means to pursue it. The idea that poverty can sometimes render war unjust has, to date, been largely overlooked. It is, nevertheless, an idea with profound implications since, once taken seriously, war becomes much harder to justify. Wars that, in every other respect, seem just may prove disproportionate or unnecessary given the alternative of alleviating poverty. (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)

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)

This article challenges the tendency exhibited in arguments by Michael Ignatieff, Jeremy Waldron, and others to treat the Law of Armed Conflict as the only valid moral frame of reference for guiding armed rebels with just cause. To succeed, normative language and principles must reflect not only the wrongs of ‘terrorism’ and war crimes, but also the rights of legitimate rebels. However, these do not always correspond to the legal privileges of combatants. Rebels are often unlikely to gain belligerent recognition (...) and might sometimes have strong moral reasons to exceed the rights of regular combatants. Where this gives rise to tensions between morality and the LOAC, a decision is needed to determine which to follow. Setting aside the idea of suppressing just war theory altogether in favour of a more purely regulatory approach to war and reforming law in the direct light of moral theory, I question the attempt by Waldron to argue that moral weight of the legal conventions at the heart of the LOAC trump any moral reasons there might be for breaching them. Even if non-combatant immunity is, as Waldron suggests, a deadly serious convention, I argue that war is justified only if pursued for the sake of deadly serious causes which may even be serious enough to oblige agents to break the law. A political theory of the ethics of war is needed to mediate between the moral and legal in such cases where they cannot be reconciled directly. (shrink)