This book explores the promises and limitations of holding individuals accountable for violations of international human rights and humanitarian law. It analyses the principal crimes under international law, such as genocide, crimes against humanity, and war crimes, and appraises both prosecutorial and other key mechanisms developed to bring individuals to justice. After applying their conclusions in a detailed case study, the authors offer a series of compelling conclusions on the prospects for accountability. This fully updated new edition contains expanded coverage of national trials under universal jurisdiction, international criminal tribunals including the International Criminal Court, new hybrid tribunals in Cambodia and elsewhere, truth commissions, and lustration. It also explores individual accountability for terrorist acts and for abuses committed in the name of counter-terrorism policy.