After ten years the ESDP has reached an important milestone in its development. It is one of the most dynamic policy areas in the framework of the European Union (EU) and is a substantial integration project. Behind this background the study analyzes the question, What has ESDP achieved in its main fields of action (capabilities, operations/missions and strategic partnership with NATO to include transatlantic relations) to meet the requirements of the European Security Strategy (ESS)? The ESS as the overarching strategic document for the ESDP claims an encompassing security approach and calls...