A documentary about the test of the most powerful hydrogen bomb AN602 ( Tsar Bomba ), tested on October 31, 1961 by the Soviet Union . The film was shot for showing to the country's top leadership and Nikita Khrushchev . In the USSR, the film was classified as " Top Secret ". 　　After the collapse of the USSR, the film, like other films on this subject, was declassified. Copies of... (展开全部)