Kim Philby. Perhaps the most ruthless and successful espionage agent of the entire Cold War, Philby had actually risen to be a senior British intelligence officer and a colleague trusted by James Angleton, of the CIA, while acting as a dedicated agent of the KGB. Greene contributed the introduction to Philby’s Soviet-edited memoir, My Silent War, in which he wrote, “He betrayed his country—yes, perhaps he did, but who among us has not committed treason to something or someone more important than a country?”
