http://www.scmp.com/article/714064/nixon-intervention-saved-china-soviet-nuclear-attackOn August 20, the Soviet ambassador in Washington told Kissinger of their plans and asked the US to remain neutral. Wishing to stop the attack, the White House leaked the story to The Washington Post. Its edition of August 28 reported that the Soviet Union planned to launch missiles with hundreds of tonnes of nuclear material on Beijing, Changchun , Anshan and its missile-launch centres of Jinquan, Xichang and Lop Nor.