 What’s more, even institutionalists need some answer to the second question—and so some account of the interactional morality of war. Rule-consequentialists need an account of the good (bad) that they are hoping that the ideal laws of war will maximise (minimise) in the long run. This means, for example, deciding whether to aim to minimise all harm, or only to minimise wrongful harm. The latter course is much more plausible—we wouldn’t want laws of war that, for example, licensed genocide just in case doing so leads to fewer deaths overall. But to follow this course, we need to know which harms are (extra-institutionally) wrongful. Similarly, contractualists typically acknowledge various constraints on the kinds of rules that could form the basis of a legitimate contract, which, again, we cannot work out without thinking about the extra-institutional morality of war (Benbaji 2011).