Minister of Foreign Affairs of the Republic of Poland (2005)

Co-Chairman of the Polish-Russian Group on Difficult Matters and Commissioner of the Euro-Atlantic Security Initiative Commission. In 1991 elected as the Director of the Stockholm International Peace Research Institute (SIPRI) for five years tenure, extended to the 2002. Member of the UN SG’s Advisory Board on Disarmament Matters from 2006 to 2011 (chaired the ABDM in 2008) and the NATO Group of Experts (Wisemen Group) on new Strategic Concept of Alliance from 2009 to 2010.
Member of several national as well as international boards, committees and scientific councils.
As a professor and researcher, he published more than 20 monographs and about 450 articles and studies.