Abstract

Recently, alternatives to both the structure and content of ‘orthodox’ just war theory have been proposed by Jeff McMahan and David Rodin. In this paper, I draw on this debate to show that key ideas in just war theory can be disputed in both of these respects. More broadly, it is unclear how we should assess the debate between differing conceptions of individual principles (such as just cause and proportionality) and the competing wider theories in which they might be situated. I employ the idea of reflective equilibrium, taken from John Rawls, to show how these conflicting viewpoints might be understood and assessed. I argue, then, that contemporary just war theory faces both important questions of substance, and a set of difficult meta-theoretical issues concerning the grounds on which competing just war theories can be assessed. Futhermore, I contend, this should influence the character of – and our expectations for – real-world just war institutions