Abstract

ABSTRACT The paper begins with the suggestion that the aura of respectability that surrounds the notion of self‐defence may render that notion suitable as a rallying point for agreement on the ethical legitimacy of warfare. I first argue that self‐defensive killing by a person X is morally justified if three conditions obtain: (1) X is together with at least one other person in a situation in which one of the persons will be killed through actions of the other person(s); (2) X is not responsible for bringing about that situation; (3) unless X kills another person, X him‐ or herself will be killed. Next, I show that on the basis of this principle military operations are morally justified only if there are no alternatives to executing them that would save more lives or prevent the total loss of freedom for people. The paper concludes with the observation that the morality of individual self‐defensive killing is unable to justify most of current national defence policies.