Fully revised and updated throughout, Theorizing European Integration 2nd edition provides a comprehensive introduction to the theoretical study of European integration. Combining perspectives from international relations, comparative politics and social and political theory, Dimitris N. Chryssochoou offers a complete overview of the many competing approaches that have sought to capture and explain the evolving political nature of the European Union (EU) and its qualitative transition from a union of states to a polity in its own right. Contemporary issues, themes and theories addressed include: the different uses and current state of EU theorizing statecentric accounts of integration and their critics new normative challenges to the study of the EU the political dynamics of European treaty reform new forms of democracy, citizenship and governance the limits and possibilities of EU constitutionalism interdisciplinary understandings of EU polityhood the introduction of a theory of organized synarchy the transformations of state sovereignty in late modern Europe.