Deadly internal conflicts threaten dozens of countries and major regions around the world. One of the most critical issues in contemporary international security, it is examined in this book by twenty experts of the Project on Internal Conflict at Harvard University's Center for Science and International Affairs.The first part of the book examines the sources of internal conflicts and the ways these may spill over or draw in neighboring states and the international community. Region by region, the book discusses the former Yugoslavia and the Balkans, East-central Europe, Russia and the former Soviet Union, South Asia, Southeast Asia, the Middle East and North Africa, Sub-Saharan Africa, and Central and South America.