 Molotov accompanied Stalin to the Teheran Conference in 1943 , the Yalta Conference in 1945 and , following the defeat of Germany , the Potsdam Conference . He represented the Soviet Union at the San Francisco Conference , which created the United Nations . Even during the period of wartime alliance , Molotov was known as a tough negotiator and a determined defender of Soviet interests . Molotov lost his position of First Deputy Chairman on March 19 , 1946 , after the Council of People 's Commissars was reformed as Council of Ministers . From 1945 to 1947 Molotov took part in all four conferences of foreign ministers of the victorious states in World War II . In general , he was distinguished by an uncooperative attitude towards the Western powers . Molotov , at the direction of the Soviet government , condemned the Marshall Plan as imperialistic and claimed it was dividing Europe into two camps , one capitalist and the other communist . In response , the Soviet Union , along with the other Eastern Bloc nations , initiated what is known as the Molotov Plan . The plan created several bilateral relations between the states of Eastern Europe and the Soviet Union ; and later evolved into the Council for Mutual Economic Assistance ( CMEA ) . 
