This collection of essays brings together jus post bellum and transitional justice theorists to explore the legal and moral questions that arise at the end of war and in the transition to less oppressive regimes. Transitional justice and jus post bellum share in common many concepts that will be explored in this volume. In both transitional justice and jus post bellum, retribution is crucial. In some contexts criminal trials will need to be held, and in others truth commissions and other hybrid trials will be considered more appropriate means for securing some form of retribution. But there is a difference between how jus post bellum is conceptualized, where the key is securing peace, and transitional justice, where the key is often greater democratization. This collection of essays highlights both the overlap and the differences between these emerging bodies of scholarship and incipient law.