オーデル・ナイセ線
To Hans Peter Schwarz, Adenauer's refusal to accept the Oder–Neisse line was in large part motivated by domestic politics, especially his desire to win the votes of the domestic lobby of those Germans who had been expelled from areas east of the Oder–Neisse line. 16% of the electorate in 1950 were people who fled or were expelled after the war, forming a powerful political force . As a result, the CDU, the CSU, the FDP and the SPD all issued statements opposing the Oder–Neisse line and supporting "Heimatrecht" ("right to one's homeland", i.e. that the expellees be allowed to return to their former homes). Adenauer greatly feared the power of the expellee lobby, and told his cabinet in 1950 that he was afraid of "unbearable economic and political unrest" if the government did not champion all of the demands of the expellee lobby. In addition, Adenauer's rejection of the Oder–Neisse line was intended to be a deal-breaker if negotiations ever began to reunite Germany on terms that Adenauer considered unfavorable such as the neutralization of Germany as Adenauer knew well that the Soviets would never consider revising the Oder–Neisse line. Finally Adenauer's biographer, the German historian Hans Peter Schwarz has argued that Adenauer may have genuinely believed that Germany had the right to retake the land lost east of the Oder and Neisse rivers, despite all of the image problems this created for him in the United States and western Europe. By contrast, the Finnish historian Pertti Ahonen—citing numerous private statements made by Adenauer that Germany's eastern provinces were lost forever and expressing contempt for the expellee leaders as delusional in believing that they were actually going to return one day to their former homes—has argued that Adenauer had no interest in really challenging the Oder–Neisse line. Ahonen wrote that Adenauer "saw his life's work in anchoring the Federal Republic irrevocably to the anti-Communist West and no burning interest in East European problems—or even German reunification." Adenauer's stance on the Oder–Neisse line was to create major image problems for him in the Western countries in the 1950s, where many regarded his revanchist views on where Germany's eastern borders ought to be with considerable distaste, and only the fact that East Germany was between the Federal Republic and Poland prevented this from becoming a major issue in relations with the West.