It may seem hard to believe, after so many decades of rancour, that Fidel Castro first came to power with the aid of the US Government.
In March 1958, the Eisenhower Administration suspended arms shipments to the Havana regime led by General Batista. Within a year, Castro's rebels had seized control.
In 1959, the new Cuban leader was welcomed by then-Vice-President Richard Nixon on an unofficial US visit. Yet relations between the two neighbours were soon under strain.
In 1960, Cuba began importing Soviet oil. The Castro Government introduced crippling taxes on American imports and nationalised hundreds of private companies, including subsidiaries of US firms. The US imposed an economic embargo and President Dwight Eisenhower cut diplomatic ties with Havana.
Eisenhower laid plans for an invasion of Cuba by US-backed exiles, but it was the Kennedy Administration that carried them out in April 1961, with disastrous results. The ragtag troops that landed at the Bay of Pigs were mostly killed or captured.