This book is a study of EU conditionality and compliance during the enlargement to the Central and Eastern European candidate countries. EU conditionality for membership is widely understood as having been a driving force for Europeanization, providing incentives and sanctions for compliance or non-compliance with EU norms, such as the 'Copenhagen Criteria' and the adoption of the acquis communautaire . By taking regional policy and regionalization as a case study, this book provides a comparative analysis of the effects of conditionality on the Central and East European countries and explores the many paradoxes and weaknesses in the use of EU conditionality over time.