Under the nonideal conditions of our world, war is sometimes morally permissible, perhaps even required. Just war theory aims to make sense of this. It does so, on my view, by allowing war only if pursued with ‘right intention.’ In order permissibly to go to war, a state must not only have a just cause and limit its war-making activity to that necessary to vindicate the just cause, both required in order to engage in war with ‘right intention,’ but it must also seek to vindicate its just cause in a manner likely to yield a ‘just and lasting peace.’ To fight without or unconstrained by this latter aim is to fight without the required ‘right intention.’ A lasting peace is not possible unless certain standards of basic justice are secure. Thes...