 Complete the following phrase:  In 195051 Heinz Felfe was also working for the West German government in Bonn with the Federal Ministry for intra-German relations. The zones of occupation agreed upon between the principal allied leaders at Potsdam had by now crystallized in such a way that the Soviet occupation zone had been developed into a separate stand-alone state; for the first few years after 1945 under Soviet administration and, since the young countrys foundation in 1949, as the German Democratic Republic while still able to access the fraternal security advice and practical support of several hundred thousand resident Soviet troops. The 