This book assesses the processes and outcomes of international urban networks in Europe from 2007 to the present day. Focusing on Greece in particular, it examines 162 municipalities involved in more than 240 European city networks to shed light on the various factors that affect cities’ capacities to act as international actors. The book demonstrates that the participation of Greek municipalities in European city networks has entailed changes to local political structures, policies and procedures, as well as the strengthening of a ‘European’ identity and the creation of long-term partnerships. At the same time, these changes have often clashed with bureaucratic traditions and unfavorable economic conditions, which have mitigated the reformatory potential of European city networking. Providing important insights into city diplomacy and Europeanization, the book will appeal to scholars and students of public administration, European integration and political science, as well as professionals and practitioners.