Though he was in office for less than 17 months, from August 1989 to January 1991, he managed to set Poland on a path toward a market economy and NATO and European Union membership.
Embora tenha ocupado o cargo durante menos de 17 meses, de Agosto de 1989 a Janeiro de 1991, ele conseguiu colocar a Polónia num caminho para a economia de mercado e para a adesão à OTAN e à União Europeia.