ツァーリ・ボンバ
The Tsar Bomba (), (code name: "Ivan" or "Vanya"), also known by the alphanumerical designation AN602, was a hydrogen aerial bomb, and the most powerful nuclear weapon ever created and tested. Tsar Bomba was developed in the Soviet Union (USSR) by a group of nuclear physicists under the leadership of Igor Kurchatov, an academician of the Academy of Sciences of the Soviet Union.