Abstract

Membership of the European Union (EU) commits member states to cooperate on foreign policy and speak with a common European voice on international issues. Since the end of the Cold War, the European Union has developed a wide range of economic, diplomatic and military capabilities in foreign policy. The EU has gradually expanded its competencies, power, and actorness beyond what is normally associated with an international intergovernmental organization. This has spurred a lively academic debate about how to conceptualize the EU as an international actor and to what extent the EU represents a deeper process of foreign policy change and transformation. This chapter examines EU enlargement as one of the EU’s most important foreign policy instruments to achieve peace and stability in Europe. EU enlargement is an interesting case for examining the complexity of the EU as a foreign policy actor as it combines both supranational and intergovernmental methods of policy-making. The Eastern enlargement of 2004/2007 moved the EU’s border further east and into the regions that Russia considers its geopolitical spheres of interest.