This chapter examines the European Union's Common Foreign and Security Policy (CFSP). From 1993 to 2009, external political relations formed the second pillar of the EU, on CFSP. Although CFSP was officially an intergovernmental pillar, the European Commission came to play an important role. There were serious attempts to strengthen the security and defence aspects of the CFSP in the face of the threats that faced the EU from instability in its neighbouring territories. However, the EU remains far from having a truly supranational foreign policy and its status as a ‘power’ in international relations is debatable. The chapter first provides a historical background on the CFSP, focusing on the creation of the European Political Co-operation (EPC), before discussing the CFSP and the European Security and Defence Policy (ESDP). It concludes with an assessment of EU power and its impact on world politics.