Research fellow at the German Institute for International and Security Affairs of the Stiftung Wissenschaft und Politik (SWP), Berlin, Germany. Head of research unit on European Integration; previously research fellow of the Federal Institute for Eastern and International Studies (Bundesinstitut für internationale und ostwissenschaftliche Studien, BIOst), Cologne, Germany. His fields of specialization include Countries of Central and Eastern Europe: transformation, political developments, foreign and security policy, bilateral relations with Germany; EU enlargement and implications; security issues in CEE. In recent years he has carried out research concerning foreign and security policies of those countries, problems regarding accession of CEE countries to EU and domestic problems of the countries; European Neighborhood Policy. He holds a diploma in public administration and a doctorate in political sciences. Member of Deutsche Gesellschaft für Osteuropakunde; Member of German-Polish Kopernikus-Group; Member of Editorial Board of Przegląd Zachodni (Poznan), Advisory Board of Aspen Review Central Europe (Prague). He holds a Bene Merito award by Polish Foreign Minister Sikorski.