Ms. Zapf is a German politician and member of the Bundestag (SPD). Since 1998, she has been the chairperson of the subcommittee for "Disarmament, Arms Control, and Nonproliferation" of the Foreign Affairs Committee of the German Bundestag. Ms. Zapf joined the SPD in 1972, and since 1990 has been the chairperson of the commission of "International Politics and Peace" (Internationale Politik und Frieden) of the SPD executive committee for South Hesse (Hessen Süd). She has belonged to the SPD executive committee of South Hesse since 1983 and has been acting chairperson since 1990. In 2003, she was one of the co-founders of the "One World" ("Eine World") Forum in the district.