"'EU security governance provides a broad and compelling overview of the diverse ways in which the European Union interacts with member states to provide internal and external security. The authors explore how the EU's growing role as a security actor has been driven by fundamental changes in the security agenda and how national sovereignty constrains EU activism. Finally they ask whether the EU is displacing the state in critical areas or is serving as a forum for intergovernmental bargaining. These are basic questions, and the erudite answers that Emil Kirchner and James Sperling provide will be of interest to all students of international relations.' Professor Gary Marks, University of North Carolina"