Administration in Germany was replaced by the Soviet Control Commission, although limited sovereignty was not granted to the GDR government until 11 November 1949. After the death of Joseph Stalin in March 1953, the Soviet Control Commission was replaced with the office of the Soviet High Commissioner on 28 May 1953. This office was abolished (and replaced by an ambassador) and (general) sovereignty was granted to the GDR, when the Soviet Union concluded a state treaty (Staatsvertrag) with the GDR on 20 September 1955. On 1 March 1956, the GDR established a military, the National People's Army (NVA). Despite the grants of general sovereignty to both German states in 1955, full and unrestricted sovereignty under international law was not enjoyed by any German government until after the reunification of Germany in October 1990. Though West Germany was effectively independent, the western Allies maintained limited legal jurisdiction over 'Germany as a whole' in respect of West Germany and Berlin. At the same time, East Germany progressed from being a satellite state of the Soviet Union to increasing independence of action; while still deferring in matters of security to Soviet authority. The provisions of the Treaty on the Final Settlement with Respect to Germany, also known as the "Two-plus-Four Treaty", granting full sovereign powers to Germany did not become law until 15 March 1991, after all of the participating governments had ratified the treaty. As envisaged by the Treaty, the last occupation troops departed from Germany when the Russian presence was terminated in 1994, although the Belgian Forces in Germany stayed in German territory until the end of 2005. A 1956 plebiscite ended the French administration of the Saar protectorate, and it joined the Federal Republic as Saarland on 1 January 1957, becoming its tenth state. The city of Berlin was not part of either state and de jure continued to be under Allied occupation of the four countries until the reunification of Germany in October 1990. For administrative purposes, the three western sectors of Berlin were merged into the entity of West Berlin being de facto part of the FRG. The Soviet sector became known as East Berlin and while not recognised by the Western powers as a part of East Germany, the GDR declared it its capital (Hauptstadt der DDR). Occupation policy At the end of the war, General Eisenhower issued a non-fraternization policy to troops under his command in