The completely updated edition of this groundbreaking text provides students with a clear analytical framework for understanding ethnic conflicts and how they affect international relations. This text surveys theories of nationalism and ethnic conflict and tests their applicability to a number of contemporary cases: the more confident nationalism of Putin's Russia, the intensification of ethnic war in Sri Lanka, and the struggle to change the face of nationalism in the former Yugoslavia, to name just a few. After a look at the sources of nationalist conflict in a country, each case study then asks how the international system reacted. Taken as a whole, the book examines how successful the international system has been in managing the many ethnic conflicts that erupted after the Cold War. This updated edition reflects all recent world events, as well as the latest scholarship in the field.