Graduated in History and Russian language from ELTE in 1969. Professor at the Faculty of Social Sciences of ELTE between 1970 and 2002. From 1980 to 1986 lecturer in an experimental education programme at Janus Pannonius University. Senior research fellow of the Twentieth Century Institute from 2000 and also of the House of Terror Museum from 2002; professor at the Károli Gáspár University from 2003; from 2005 head of the university's Institute of Kremlinology. Received his PhD in 1970, became a candidate in History in 1976 and became an honorary lecturer of the university in 1988. University professor since 2003. His main field of interest is the history of Russia and the Soviet Union in the 19th and 20th centuries. He has published monographs, reference works and studies about the subject both in Hungary and abroad, and made documentary films and reports based on "oral history". Lecturer at numerous conferences both in Hungary and abroad. His research activities have strong links with his position as a university teacher - many of his students have become historians, and he is the supervisor of numerous students involved in the PhD programme.
Eastern Europe in the 1950s - the failure of reform attempts