During the Cultural Revolution, the CCP often quoted a slogan by Karl Marx: "The proletariat can liberate itself only by liberating all of humanity." The CCP preaches world revolution. In the 1960s, the former Soviet Union was going through a period of contraction and was forced to promote the cut back at external revolution. The goal became to peacefully coexist with Western capitalist countries and provide less support to Third World revolutionary movements. The CCP called this policy "revisionism." In the early 1960s, CCP Ambassador to the Soviet Union Wang Jiaxiang made a similar proposal but was criticized by Mao as being too friendly to the imperialists, revisionists, and reactionaries, and not supportive enough of the world revolutionary movement. Therefore, in addition to exporting revolution to Asia, Mao also competed with the Soviet Union in Africa and Latin America.