European Integration Theory provides an overview of all the major approaches to European integration, from federalism and neofunctionalism to liberal intergovernmentalism, social constructivism, normative theory, and critical political economy. The three sections of the text examine the topics of ‘Explaining European Integration’, ‘Analysing European Governance’, and ‘Constructing the European Union’. Within these sections, each chapter reflects on the development, achievements and problems of a number of approaches, and discusses historical and current issues of European integration. The concluding chapter then comparatively assesses the strengths and weaknesses of each approach and looks at the emerging issues. This edition includes two new chapters on European integration theory and critical theory.