“Our Man In Havana (1958) is a novel set in Cuba by the British author Graham Greene. He makes fun of intelligence services, especially the British MI6, and their willingness to believe reports from their local informants. The book predates the Cuban Missile Crisis, but certain aspects of the plot, notably the role of missile installations, appear to anticipate the events of 1962. It was adapted into a film of the same name in 1959, directed by Carol Reed and starring Alec Guinness. In 1963 it was adapted into an opera by Malcolm Williamson, to a libretto by Sidney Gilliat, who had worked on the film. In 2007, it was adapted into a play by Clive Francis, which has since toured the UK several times and been performed in various parts of the world. Greene joined MI6 in August 1941. In London…