Book excerpt: Understanding Ethnic Conflict provides all the key concepts needed to understand conflict among ethnic groups. Including approaches from both comparative politics and international relations, this text offers a model of ethnic conflict's internationalization by showing how domestic and international actors influence a country's ethnic and sectarian divisions. Illustrating this model in five original case studies, the unique combination of theory and application in Understanding Ethnic Conflict facilitates more critical analysis of contemporary ethnic conflicts and the world's response to them.