From a previously unpublished journal entry by Allen Ginsberg, dated February 18–19, 1965, and collected in The Essential Ginsberg, which will be published next month by Harper Perennial. In 1965, Ginsberg accepted an invitation from the Cuban government to participate in a literary conference in Havana. After discussing such subjects as freedom of speech, capital punishment, and homosexuality, Ginsberg drew government suspicion and was ultimately expelled from the country. The Cuban Institute for Friendship with the Peoples (ICAP) is a Cuban organization founded to promote ties between Cuba and other nations. Vilma Espín (1930–2007), a Cuban politician, was married to Raúl…