This book tests a new approach to understanding ethnic mobilization and considers the interplay of global forces, national-level variation in inequality and repression, and political mobilization of ethnicity. It advances the claim that economic and political integration among the world's states increases the influence of ethnic identity in political movements.Drawing on a 100-country dataset analyzing ethnic events and rebellions from 1965 to 1998, Olzak shows that to the degree in which a country participates in international social movement organizations, ethnic identities in that country become more salient. International organizations spread principles of human rights, anti-discrimination, sovereignty, and self-determination. At the local level, poverty and restrictions on political rights then channel group demands into ethnic mobilization. This study will be of great importance to scholars and policy makers seeking new and powerful explanations for understanding why some conflicts turn violent while others do not. Olzak suggests that the form and magnitude of ethnic mobilization depend on a state's position along the centre-periphery continuum and its embeddedness in the 'world system of organizations.' Her theoretical contribution is a very welcome reminder of the possible impact of global change on local ethnic conflict. A new approach to ethnic mobilization that considers the interplay between global forces, national-level variation in inequality and repression, and the political mobilization of ethnicity.Susan Olzak is Professor of Sociology at Stanford University. She is the author ofThe Dynamics of Ethnic Competition and Conflict(Stanford University Press, 1992) andCompetitive Ethnic Relations(1986). A practiced event historian of ethnic conflict in the United States, Susan Olzak has re-emerged as a consummate analyst of the relationship between globalization and ethnic movements in core and periphery. This is a book that world systel37