Che Guevara
In Guevara's private writings from this time (since released), he displays his growing criticism of the Soviet political economy, believing that the Soviets had "forgotten Marx". This led Guevara to denounce a range of Soviet practices including what he saw as their attempt to "air-brush the inherent violence of class struggle integral to the transition from capitalism to socialism", their "dangerous" policy of peaceful co-existence with the United States, their failure to push for a "change in consciousness" towards the idea of work, and their attempt to "liberalize" the socialist economy. Guevara wanted the complete elimination of money, interest, commodity production, the market economy, and "mercantile relationships": all conditions that the Soviets argued would only disappear when world communism was achieved. Disagreeing with this incrementalist approach, Guevara criticized the "Soviet Manual of Political Economy", correctly predicting that if USSR did not abolish the law of value (as Guevara desired), it would eventually return to capitalism.
Che Guevara
Guevara, who was practically the architect of the Soviet–Cuban relationship, then played a key role in bringing to Cuba the Soviet nuclear-armed ballistic missiles that precipitated the Cuban Missile Crisis in October 1962 and brought the world to the brink of nuclear war. A few weeks after the crisis, during an interview with the British communist newspaper the "Daily Worker", Guevara was still fuming over the perceived Soviet betrayal and told correspondent Sam Russell that, if the missiles had been under Cuban control, they would have fired them off. While expounding on the incident later, Guevara reiterated that the cause of socialist liberation against global "imperialist aggression" would ultimately have been worth the possibility of "millions of atomic war victims". The missile crisis further convinced Guevara that the world's two superpowers (the United States and the Soviet Union) used Cuba as a pawn in their own global strategies. Afterward, he denounced the Soviets almost as frequently as he denounced the Americans.