Georgy Flerov
Georgy Nikolayevich Flerov, also spelled Flyorov (Russian: Георгий Николаевич Флёров, IPA: [ɡʲɪˈorɡʲɪj nʲɪkɐˈlajɪvʲɪtɕ ˈflʲɵrəf]; 2 March 1913 – 19 November 1990), was a Soviet physicist who is known for his discovery of spontaneous fission and his important contribution towards crystallography and material science, for which, he was honored with many awards. In addition, he is also known for his letter directed to Joseph Stalin, during the midst of World War II, to start a program of nuclear weapons in the Soviet Union.