But it was the Cuban revolution that turned the region into an important theatre in that ideological and military conflict. Installing moderate civilian politicians in government, Mr Castro named himself head of the armed forces. He quickly dismantled Batista’s army. Some 550 people more or less closely linked to Batista’s regime were executed after show trials, a bloodbath in which Guevara played a particularly prominent role. Mr Castro deepened his alliance with the Popular Socialist Party (as Cuba’s old-established communist party called itself), and set up a parallel government at a newly created National Agrarian Reform Institute headed by Guevara. Within seven months of victory he had shelved his promise of elections. The July 26th Movement splintered, with many of its non-communists (including Mr Franqui) going into exile, jail or quiet opposition. In October 1959, just nine months after entering Havana, Mr Castro began the contacts with the Soviet Union that swiftly led to a full-scale economic and military alliance.
The CIA quickly concluded that Mr Castro was a closet communist and set out to overthrow him. But it was not until October 1960 that the United States began to impose the embargo. By the time a CIA-organised invasion of anti-Castro Cubans landed at the Bay of Pigs in April 1961, Mr Castro was ready for them, as Arbenz had not been in Guatemala. In 1962 the Soviet Union’s decision to station missiles on Cuban soil brought the world the closest it has ever come to nuclear war. In return for their withdrawal, the Kennedy administration guaranteed that it would not again invade Cuba. Mr Castro had consolidated his victory. His triumph would prompt an exodus of hundreds of thousands of the more entrepreneurial Cubans.