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 the Council of Ministers
Yalta Conference
Yalta Conference
Vyacheslav Molotov