The Organization of European Security Governance investigates what impact the changing nature of security challenges has had on the organization of security governance in Europe. As the most pervasive security challenges today are difficult to classify as either internal or external, the traditional divide between domestic and international security has become blurred. In response, European leaders have emphasized the need to develop comprehensive and horizontal approaches to security in the European Union. But has the European Union been able to deliver a coherent response to this new...