ワルシャワ条約
The relations between West Germany and Poland improved through Willy Brandt's Ostpolitik. West Germany recognized the Oder-Neisse line as Poland's western border in the Treaty of Warsaw. The Warschauer Kniefall gesture by Chancellor and future Nobel Peace Prize laureate Willy Brandt, which took place at the Monument to the Warsaw Ghetto Uprising Heroes in 1970, was regarded as a major step in the process of reconciliation between the two countries.