On 27 and 28 September, the Centre for European Peace and Security Studies at the IFSH with financial support from the Fritz-Thyssen-Foundation organized an international workshop on “EU Security Governance in the Post-National Constellation: Conceptual, Empirical and Practical Challenges”. The event brought together 20 researchers from domestic and foreign institutions to discuss conceptual perspectives, empirical developments and normative pitfalls of EU security governance. The papers of the introductory presented ideas for a reformulation of security governance as a “critical tool” and scrutinized the normative trade-offs of security governance. The contributions to the second panel approached EU security governance from a comparative and institutional perspective. The final two panels included case studies on the EU police mission in Afghanistan, attempts to combat piracy of the coast of Somalia, EU counterterrorism policy and EU critical infrastructure protection. The papers will feed into a special issue of the journal European Security scheduled for publication in 2013.