オーデル・ナイセ線
The West German definition of the "de jure" borders of Germany was based on the determinations of the Potsdam Agreement, which placed the German territories (as of 31 December 1937) east of the Oder–Neisse line ""under the administration of the Polish State" while "the final delimitation of the western frontier of Poland should await the peace settlement"". The recognition of the Oder-Neisse Line as permanent was thus only reserved to a final peace settlement with reunited Germany.