The Oder–Neisse line (, ) is the border between Germany and Poland which was drawn in the aftermath of World War II. The line is formed primarily by the Oder and Lusatian Neisse rivers, and meets the Baltic Sea west of the seaport cities of Szczecin (German: Stettin) and Swinoujscie (Swinemünde). All pre-war German territory east of the line and within the 1937 German boundaries (23.8% of the former Weimar Republic) were discussed at the Potsdam Conference, and were placed under International Law Administrative status of Poland (for most of the area) and the Soviet Union (northern East Prussia) after the war (pending the final World War II peace treaty for Germany), and the vast majority of its native German population was killed, fled or expelled by force. The Oder–Neisse line marked the border between the German Democratic Republic (East Germany) and Poland from 1950 to 1990. East Germany confirmed the border with Poland in 1950, while West Germany, after a period of refusal, finally accepted the border (with reservations) in 1970. In 1990 the newly reunified Germany and the Republic of Poland signed a treaty recognizing it as their border.