This comprehensive book brings together the key concepts, themes, theories, and practices that are defining peace psychology as we begin the 21st century. It is rooted in psychology, but includes a wide range of interpersonal, community, national and international contexts, multiple levels of analysis from micro to macro, and multi-disciplinary perspectives. It reflects the breadth of the field and captures the main intellectual currents in peace psychology: violence, social inequalities, peacemaking, and the pursuit of social justice. This book contains a wide range of topics, including ethnic conflict, family violence, hate crimes, militarism, conflict management, social justice, nonviolent approaches to peace, and peace education. It is ideal for readers interested in peace education, international studies, psychology, political science, anthropology, and sociology.