The German question in Central and Eastern Europe and the long peace in Europe after 1945: An integrated theoretical explanation

Within the field of International Relations, theoretically informed explanations of the long peace in Europe since 1945 tend to focus on Western Europe, especially the revolution in Franco-German relations. In contrast, German relations with Central and Eastern Europe (CEE) are ignored, despite the fact that this nexus was a major cause of instability prior to 1945. This article focuses on why the German question in CEE ceased to threaten the stability of Europe after 1945. The article empirically examines the development of the German question in CEE since 1945, which refers here mainly to the Oder-Neisse line and the plight of ethnic Germans expelled from CEE after World War II. It provides a theoretically integrated and chronologically sequenced explanation. First, it argues that Realism primarily explains the successful containment of the German question in CEE between 1945 and the late 1960s. Second, it argues that the Constructivist process of cultural change, which altered German intensions, was primarily responsible for subsequently increasing the depth of peace and stability between Germany and CEE, especially after the Cold War. Finally, it is argued that prior Realist factors and Liberal processes constituted a necessary, though not sufficient, condition for cultural change.