ツァーリ・ボンバ
Unofficial names – "Tsar Bomba" and "Kuzkina Mother". The name Tsar Bomba (loosely, "King of Bombs") emphasizes that this is the most powerful weapon in history. The name “Kuz'ka's Mother” was inspired by the statement of Khrushchev to then US Vice President Richard Nixon: “We have funds at our disposal that will have dire consequences for you. We will show you Kuz'ka's mother!"