Book excerpt: Interpreting Convergence in the European Union introduces the idea of collective action as a prerequisite for achieving convergence and cohesion in the European Union. Institutional networks and social capital play a crucial role in influencing actors' preferences and shaping institutional interactions through the process of political exchange and socialization. Although the main focus of the book is on policymaking processes and governance structures in EU regional policy, its core theoretical hypotheses and conclusion are drawn from empirical research into the response of Greek regions to the challenges of Europeanization. This framework is applicable to almost all areas of EU public policymaking.