Janusz was born in 1937 and has M. Sc and PhD in pure mathematics. He is Doctor Honoris Causa of the University of Leeds (UK). He was a member of the democratic opposition since mid 60’ties, National Spokesman of “Solidarity” (until 1989) and a member of its National Executive (Presidium). After Dec. 13th 1981, during the martial law, he was imprisoned for over one year, then rearrested several times. He also acted as the spokesman of “Solidarity” delegation to Round Table negotiations with the communist authorities (Feb.- April 1989). Janusz was a member `of Polish Parliament 1989-2001, Deputy Minister (1990-1991) and Minister of National Defence (1991-1993 and 1997-2000) as well as member of the Democratic Party (previously- Union for Freedom) and its President in 2006-2009, member of the European Parliament (2004-2009) and its vice-President, and vice president of the Foreign Relation Committee of the EP.
Currently, he is the president of the Council of the Euro-Atlantic Association (Poland), member of the Advisory Board of the Security&Defence Agenda (Brussels), member of the European Leadership Network, Senior Fellow in the Centre for International Relation (Warsaw), adviser to the Minister of National Defence. (2010-2016), and Chairman of the Defence Industry Cooperation Committee of the Polish-Ukrainian Chamber of Commerce.
Decorations: Great Cross of Order of Gedymin (Lithuania), Officer of the Legion of Honour (France), Manfred Woerner Cross (Germany), Terra Mariana Cross (Estonia), Commander of the Polonia Restituta Cross (Poland), Order of Raising Sun (Japan)