The Yearbook of European Integration from the Institute for European Politics (Berlin) has been documenting and evaluating the European integration process in a timely and detailed manner since 1980. Over 35 years, it has created a unique documentation of European contemporary history. The Yearbook of European Integration 2015 continues this tradition. In approximately 100 contributions, the authors trace the European political events of the reporting period 2014/2015 according to their respective research focuses and provide information on the work of European institutions, the development of individual EU policy areas, Europe's role in the world, and European policy in member states and candidate countries. Among the editors: Prof. Dr. Dr. h.c. Werner Weidenfeld is the Director of the Center for Applied Policy Research (CAP) at Ludwig Maximilian University.