Immediately after the test, several U.S. Senators condemned the Soviet Union. Prime Minister of Sweden, Tage Erlander saw the blast as the Soviets' answer to a personal appeal to halt nuclear testing that he had sent the Soviet leader in the week prior to the blast. The British Foreign Office, Prime Minister of Norway Einar Gerhardsen, Prime Minister of Denmark Viggo Kampmann and others also released statements condemning the blast. Russian and Chinese radio stations mentioned the American underground nuclear test of a much smaller bomb (possibly the "Mink" test) carried out the day prior, without mentioning the Tsar Bomba test.