オーデル・ナイセ線
In the late 1950s, by the time of Dwight D. Eisenhower's Presidency, the United States had largely accepted the Oder–Neisse line as final and did not support German demands regarding the border, while officially declaring a need for a final settlement in a peace treaty. In the mid-1960s the U.S. government accepted the Oder–Neisse line as binding and agreed that there would be no changes to it in the future. German revisionism regarding the border began to cost West Germany sympathies among its western allies.