In the 1960s ,the China and Soviet relation is get worser.
Mao declear that kruschev is weak and not the real Communist.
kruschev also say that Mao is second Stalin.
In the year 1964 when Chinese can create nuclear waepon Soviet already prepare to attack China because kruschev belive that Chinese having nuclear is a disaster to Soviet.
Later in the year 1973 after Sino Soviet border conflict ,Soviet prepare to attack China by nuclear bomb. Their also sent 150 warships to the Pacific.
Soviet also start negotiate with Western European countrys specially
West Germany for avoid two battle front.Their also start megotiate with American and Japan too.
China also prepare their missile to attack Soviet city in Siberia and Central Asia. KGB also belive that China have missile that can reach Moscow.
However, when President Nixon tell that if Soviet attack China. American will not stand still. So this made brezhnev change his mind.
But if Soviet have really attack China ,And Sino Soviet war is begin.
What will happen to our World History.
American will involves in this war or not.