 In that same month, annihilation of the opposition in Bulgaria began on the basis of continuing instructions by Soviet cadres.At a late September 1947 meeting of all communist parties in Szklarska Poręba, Eastern Bloc communist parties were blamed for permitting even minor influence by non-communists in their respective countries during the run up to the Marshall Plan.In the former German capital Berlin, surrounded by Soviet-occupied Germany, Stalin instituted the Berlin Blockade on June 24, 1948, preventing food, materials and supplies from arriving in West Berlin.