Stalin pressed for a revision of Poland's eastern border with the Soviet Union to match the line set by British Foreign Secretary Lord Curzon in 1920. In order to compensate Poland for the resulting loss of territory, the three leaders agreed to move the German-Polish border to the Oder and Neisse rivers. This decision was not formally ratified, however, until the Potsdam Conference of 1945.[7]
Churchill successfully proposed to Stalin a westward movement of Poland, which Stalin accepted. It gave the Poles industrialized German land to the west but took marshlands to the east. It also provided a territorial buffer to the Soviet Union against invasion. Churchill's plan involved a border along the Oder and the Neisse, which he views to give Poland a fair compensation for the Eastern Borderlands.[11]