Deputy Director of the Centre for Eastern Studies (OSW), having formerly served as Head of Department for Ukraine, Belarus and Moldova, and as an analyst in the Russian Department. He was previously co-ordinator of the Belarusian and Ukrainian projects at the Stefan Batory Foundation, visiting scholar at the Kennan Institute in Washington, DC, and a participant in several international research projects (including the Centre for European Policy Studies, Think Visegrad, the German Association for East European Studies). He is a regular contributor to “Nowa Europa Wschodnia” journal and “Tygodnik Powszechny”. A graduate of the Institute of International Relations of the University of Warsaw and the Centre for East European Studies of the University of Warsaw. He also studied at Saint Petersburg State University and Warsaw School of Economics. The author of a book: "Sztuka przetrwania. Deportacje sowieckie z powiatu bielskiego 1940-1941" (IPN 2019) ["The art of survival. The Soviet deportations from the Bielsk county 1940-1941"]. He is curently working on a PhD thesis on the history of Jews in the Russian Empire.