is Professor of humanities, a Polish diplomat and politician and a researcher and specialist in international relations. He worked at the Polish Institute of International Affairs from 1961 to 1989 and was Director of the Stockholm International Peace Research Institute (SIPRI) from 1991 to 2002. In 1992-1993, he was the CSCE Chairman’s Special Representative for the Transdniestrian Settlement Process. He was a member of the National Security Council to the President of Poland and numerous councils and scientific societies. In 2001-2005, he served as Deputy Minister of Foreign Affairs and in 2005 Minister of Foreign Affairs.