This casebook provides comprehensive treatment of international criminal law in a problem-oriented way. It draws widely from the jurisprudence of the various international and hybrid criminal tribunals, United Nations bodies, regional human rights institutions, domestic courts, alternative or traditional courts, and transitional justice institutions. Its focus is on the core international crimes within the jurisdiction of the ICC, supplemented by chapters on the standalone crimes of torture and terrorism. This edition includes substantially more material from the International Criminal Court and the revival of the hybrids model, including revised materials on the crime of aggression, new jurisdictional theories, and controversial recent jurisprudence.