McMahan On Killing in War
Jeff McMahan wrote a genuinely revolutionary book, Killing in War (OUP, 2009), which uncovered a flaw in standard just-war theory. The standard view sharply separates the morality of going to war—jus ad bellum—from the morality of warfare—jus in bello. Whether or not a war is just does not affect the morality of how war is to be conducted.