In 1962, Mao criticised Khrushchev for backing down in the Cuban Missile Crisis. By that time the Soviets were openly supporting India in its border dispute with China. These events were followed by formal statements of each side's ideological positions: the Chinese came out with their document in June 1963.The Chinese Communist Party's Proposal Concerning the General Line of the International Communist Movement . The Soviets too came out with their own document.Open Letter of the Communist Party of the Soviet Union . Thereafter the two parties stopped communicating.
