At one major meeting of communist parties, Khrushchev personally attacked Mao as an ultraleftist and a left revisionist and compared him to Stalin for dangerous egotism. The conflict was now out of control and was increasingly fought out in 81 communist parties around the world. The final split came in July 1963, after 50,000 refugees escaped from Sinkiang, in Western China, to Soviet territory to escape persecution. China ridiculed the Soviet incompetence in the Cuban Missile Crisis of 1962 as adventurism and capitulationism that ended up in defeat. Moscow was increasingly prioritizing friendly relationships and test ban treaties with the United States and the United Kingdom.