Genocide and mass atrocity : Defining contexts and crimes -- Politics, practice, and principles: The framework for international action -- Who kills and why? -- 20th-Century beginnings: German South-West Africa -- The Armenian genocide -- Nazi Germany: the Holocaust -- Rwanda and Burundi -- Democide, ethnic cleansing, and other crimes against humanity --Punishment: courts, tribunals, and other adjudicatory methods -- So what? Is prevention possible? -- War crimes and the nature of war -- Historical roots and regulation -- Contemporary law relating to armed conflict: what is a war crime? -- Combatants and civilians: Private military companies, POWs, and unlawful combatants -- Law and noninternational conflict -- War crimes: culture and combat -- Aerial warfare -- Weapons and prohibitions: chemical, biological, and nuclear -- Courts and trials.