A moratorium on testing Testing came into effect Change in October 1958 , and Britain never resumed atmospheric testing Testing .

This test Testing series was scheduled quickly , in order to respond Response in kind to the Soviet resumption of testing Testing after the tacit 1958–1961 test Testing moratorium .

Nikita Khrushchev announced Expressing_publicly the end Process_end of a three-year moratorium on nuclear testing Testing on August 30 , 1961 , and Soviet tests recommenced Process_start on September 1 , initiating Process_start a series of tests Testing that included Cause_to_be_included the detonation of Tsar Bomba .