Co-Chairman of the Polish-Russian Working Group on Difficult Matters, member of the NATO Group of Experts on new Strategic Concept of Alliance (2009 -2010) and Commissioner of the Euro-Atlantic Security Initiative Commission. He is former Minister of Foreign Affairs of Poland and Director of the Stockholm International Peace Research Institute (1990-2002). He is also a member of many other boards and scientific councils in Poland and abroad, and a professor at Warsaw University. He is the co-author (with A. Torkunov) of White Spots – Black Spots. Difficult Matters in Polish-Russian Relations 1918-2008, published in 2010.