Vishal Sharma: In 1962, China invaded India on the same day when USA was about to invade Cuba and a nuclear war between USa and USSR was imminent. China took advantage of that and withdrew immediately after that crisis over Cuba was over. USSR in November 6, had dondemned China and started sending MIG fighters to India. These could have arrived earlier but for the objection of Morarji Desai, who refused to allow enough fund for the Ministry of Defence and put the blame on Krishna Menon. USa-UK also did nothing in 1962, UK said openly to India to give up Kashmir first before expecting Western help. USSR has cut off its relationship with China in 1960, when China expelled all Soviet Consulates. In 1969, there was an war between China and the USSR. In 1979, China invaded Vietnam, a Soviet ally. USA dropped atom bomb on Japan because Japan was about to surrender to the USSR on 8 August 1945.