Krzysztof Penderecki | Jan van Eyck | Jan Matejko Academy of Fine Arts | Jan Hammer | Jan Peerce | Jan Hus | Jan Mayen | Jan Guillou | Jan Smuts | Jan Fabre | Jan Morris | Jan Matejko | Jan Garbarek | Ignacy Jan Paderewski | Jan van Riebeeck | Jan Troell | Jan Tinbergen | Jan Neruda | Jan-Michael Vincent | Jan Kochanowski | Krzysztof Komeda | Krzysztof Kieslowski | Jan Brewer | Jan Bechtum | Krzysztof Kieślowski | Jan Zamoyski | Jan Ullrich | Jan Peter Balkenende | Jan Egeland | Robert Jan Stips |
From 1989 to 1990 he was the manager minister Aleksander Hall's office, and from 1990 to 1993, the civil vice minister of national defence in the governments of Tadeusz Mazowiecki, Jan Krzysztof Bielecki and Hanna Suchocka.