 Other philosophers, equally unpersuaded by Walzer’s arguments, nonetheless reject a substantively revisionist take on just cause. If the individual self-defence-based view of jus ad bellum cannot justify lethal defence against “lesser aggression”, then we could follow Rodin (2014), and argue for radically revisionist conclusions about just cause; or we could instead reject the individual self-defence-based approach to justifying killing in war (Emerton and Handfield 2014; Lazar 2014).