Just and Unjust Uses of Limited Force by Daniel Brunstetter offers an insightful look into the permissions and limits of international force short of war. Brunstetter proposes a theory of justice for limited force (or vim in Latin). The need for such a study is indicated by the fact that most of the terminology used to describe morality in war does not adequately capture contemporary uses of force, which warrants additional vocabulary. This is what Brunstetter provides. Full of contemporary examples and counterfactuals, Brunstetter's work offers a relevant heuristic to aid in understanding the fights of today.