Can you imagine the reputation of a literary figure surviving the disclosure that he worked (however briefly and ineffectually) for Hitler's Abwehr? Yet Ernest Hemingway worked for Stalin’s KGB and nobody (among the “smart set”) seems to bat an eye. According to KGB defector Alexander Vassiliev "the 42-year-old Hemingway was recruited by the KGB under the cover name "Argo" in 1941, and cooperated with Soviet agents whom he met in Havana and London. This comes from a book published in 2009 by Yale Univ. Press (not exactly a branch of the John Birch Society.)"Castro's revolution," Hemingway wrote in 1960, “is...