"develop its own nuclear arsenal" . "Soviet atomic bomb effort" . "quest for the atomic bomb" . . "first nuclear bombs" . . "their own atomic bomb project" . "soviet atomic bomb project" . "had detonated their first nuclear bomb" . "Russian Atomic project" . "29th of August 1949" . "Soviet Union" . . "a crash program to develop them" . "Russian bomb program" . "tested an atomic bomb" . "Soviet Atomic Energy Commission" . "Soviet atom bomb" . "Soviet nuclear capabilities" . "development of a nuclear weapon" . "detonated" . "develop its own atomic bomb" . "Russian atomic bomb project" . "atomic bomb in the USSR" . "Soviet atomic bomb project" . . "Soviet effort in developing nuclear weapons" . "Soviet atomic bomb programme" . . "had also been conducting research in the field" . "Soviet nuclear project" . . . . "atom bomb" . . "not yet been successful with thermonuclear staging" . . "Soviet atomic bomb project" . "Soviet Nuclear Program" . "Soviet thermonuclear bomb project" . "atomic bomb" . "Soviet Union's first atomic bomb" . "the end of the American atomic monopoly in 1949" . . . "Soviet atomic effort" . "nuclear weapon" . . . "atomic bomb until 1949" . "Soviet nuclear weapons program" . "tested its first atomic bomb on August 29, 1949" . "Soviet atomic bomb" . "Soviet nuclear program" . "solving real problems" . . "Soviet atomic bomb project's" . "development of an atomic bomb" . . . "RDS" . "atomic bomb program" . "Soviet nuclear tests" . "Soviet" . "its own atomic weapon development" . . "Soviet Union tested its first atomic bomb" . "hydrogen bomb" . "1940s nuclear bomb tests" . "USSR Nuclear Program" . "the Soviet nuclear program" . . "Soviet Atomic Bomb" . "atomic bomb project" . "RDS-37" . "atomic weapon capability" . "the Soviet Union builds its own atomic bomb" . "Russians had a bomb" . . . "first atomic bomb" . . "Soviet nuclear weapons project" . "development" . "hydrogen bomb project" . . "Atomic Scientists" . . "Institute G" .