Successive Enlargements to the European Union membership have transformed it into an economically, politically and culturally heterogeneous body with distinct vulnerabilities in its multi-level governance. This book analyses core-periphery relations to highlight the growing cleavage, and potential conflict, between the core and peripheral member-states of the Union in the face of the devastating consequences of Eurozone crisis. Taking a comparative and theoretical approach and using a variety of case studies, it examines how the crisis has both exacerbated tensions in centre-periphery relations within and outside the Eurozone, and how the European Union’s economic and political status is declining globally. This text will be of key interest to students and scholars of European Union studies, European integration, political economy, public policy, and comparative politics.