An exclusive mandate is a government's assertion of its legitimate authority over a certain territory, part of which another government controls with stable, de facto sovereignty. It is also known as a claim to sole representation or an exclusive authority claim. The concept was particularly important during the Cold War period when a number of states were divided on ideological grounds.
For nearly all of the 41 years that Germany was split into two countries, the Federal Republic of Germany (West Germany) claimed to be the sole legitimate successor to the German Reich that existed from 1871 to 1945. This claim was initially based solely on the government's mandate by virtue of free elections. To that end, it claimed Berlin, capital of united Germany from 1871 to 1945, as its capital, with the provisional capital in Bonn.
In a statement made before the Bundestag, German Chancellor Konrad Adenauer asserted this mandate as early as October 21, 1949, in response to the constitution of the German Democratic Republic (GDR) coming into effect. The Secretary of State Summit of the three western powers on September 18, 1950 in New York City, supported Chancellor Adenauer's claim.
When the Soviet Union proclaimed the sovereignty of the GDR, the West German Bundestag once again unanimously insisted that the Federal Republic was the sole legitimate representative of the German people. At the Treaties of Paris (), at which the Federal Republic of Germany was admitted into the North Atlantic Treaty Organization, the allied nations adopted the position which the three western allies had already confirmed at the Nine-Power Conference in London: that the Federal Republic had the exclusive right to act on behalf of the entire German people in matters of foreign policy. The western nations thereby recognized the Federal Republic as the only lawful government for Germany as a whole.