This book is a welcome attempt to bring together a range of different disciplinary insights with a view to developing a political theory of the European Union. The attempt is animated by both empirical and normative concerns: to better understand what kind of entity the EU is and the nature of the authority it exercises, as well as to assess the EU's claim to legitimacy and the quality of its democracy and justice. There are excellent contributions from leading scholars across the fields of international relations, law and political theory which interrogate these and other questions. While not purporting to provide a fully-fledged political theory of the EU, the book helps to identify some of the building blocks for a political theory of the EU, as well as setting out a rich array of research questions for the future. Grainne de Burca, Harvard Law School Political Theory of the European Union is highly recommended for graduate students, and for scholars studying the development of the EU. It is a refreshing contribution to this area of study and should serve to stimulate further interdisciplinary research into this ever-expanding field of study. Erwin Erhadt of Thomos More College, CritCom, A forum for Research & Commentary on Europe