On 5 March 1953, Stalin's death triggered a power struggle in which Khrushchev emerged victorious upon consolidating his authority as First Secretary of the party's Central Committee. On 25 February 1956, at the 20th Party Congress, he delivered the "Secret Speech", which denounced Stalin's purges and ushered in a less repressive era in the Soviet Union. His domestic policies, aimed at bettering the lives of ordinary citizens, were often ineffective, especially in agriculture. Hoping eventually to rely on missiles for national defense, Khrushchev ordered major cuts in conventional forces. Despite the cuts, Khrushchev's time in office saw the tensest years of the Cold War, culminating in the Cuban Missile Crisis.