Short answers, pulled from the story.
Vyacheslav Molotov was a Soviet politician and diplomat who served as Chairman of the Council of People's Commissars from 1930 to 1941 and as Minister of Foreign Affairs from 1939 to 1949 and again from 1953 to 1956. He was one of Joseph Stalin's closest allies and one of the most prominent figures in the Soviet government during Stalin's rule.
The term Molotov cocktail was coined by Finnish fighters during the Winter War after Molotov claimed on radio that Soviet aircraft were not bombing but delivering food to starving Finns. The Finns named the incendiary air bombs "Molotov bread baskets" and called their improvised firebombs Molotov cocktails, "a drink to go with the food."
The Molotov-Ribbentrop Pact was a non-aggression treaty signed on the 22nd of August 1939 between Nazi Germany and the Soviet Union. Its most significant component was a secret protocol arranging for the partition of Poland, Finland, and the Baltic states between both powers, and for Soviet annexation of Bessarabia. The protocol authorised Hitler's invasion of Poland, which began on the 1st of September 1939.
Molotov approved three hundred and seventy-two documented execution lists during the Great Purge, more than any other Soviet official including Stalin. In 1938 alone, twenty out of twenty-eight People's Commissars in his government were executed.
After Stalin's death in 1953, Molotov was reappointed Foreign Minister on the 5th of March 1953. His opposition to Nikita Khrushchev's de-Stalinisation policy led him to join a failed coup attempt in 1957. He was expelled from the Presidium, sent to Mongolia as ambassador, and by 1961 was expelled from the Communist Party altogether.
Molotov died on the 8th of November 1986 at the age of ninety-six, during Mikhail Gorbachev's rule, in Kuntsevo Hospital in Moscow. He was buried in Novodevichy Cemetery in Moscow. At the time of his death, he was the last surviving major participant in the events of the 1917 Russian Revolution.