In their book Inside the Kremlin's Cold War (Harvard University Press, 1996), Vladislav Zubok and Constantine Pleshakov argue that Khrushchev wanted to preserve the Cuban revolutionary government. He was ideologically committed to supporting anti-colonial communist revolutions, and he was particularly excited about the Cuban one. Khrushchev also believed Kennedy to be politically weak and easy to push around. Other Soviet elites did not approve of the Cuban plan, even though Khrushchev pressured the Politburo to sign off on the decision.