1949 : Proclamation of the PRC 1950 : Sino Soviet Treaty of Friendship Alliance and Mutual Assistance : "lean to one side" 1953 : Soviet model of development implemented (foreign domination) issue of Taiwan 1956 : Secret Speech 1956 : Mao condemns ideological revisionism and peaceful coexistance 1957 : USSR stops money loans 1958 : Mao humiliates Khrushchev Great Leap Forward 1958 : 2nd Straits crisis 1959 : end of nuclear cooperation with USSR 1960 : Withdrawal of Soviet advisors 1960-11 : meetin in Moscow (81 communist countries) China charges SU with revisionism 1962 : war war between India and China : SU refuses to help 1964 : Brezhnev Doctrine 1964 : A bomb 1966 : Cultural Revolution 1967 : Red Guards attack SU embassy 1968 : Soviet invasion of Czechoslovakia 1969 : border dispute over Ussuri River 1969 : Chinese rapprochement with US 1962 : Mao criticizes Khr. in Cuban missile crisis 1964-10 : Zhou Enlai visits Moscow to speak to Brezhnev but disappointed 1967 : PRC accused SU of plotting with US against China 1967 : Mongolia : USSR sphere of influence but Mao claimed it 1969 : tensions raised the prospect of a nuclear war between China and SU