Oleg Gordievsky, Britain's Most Valuable Cold War Spy Inside the KGB, Dies at 86 LONDON (AP) — Oleg Gordievsky, a Soviet KGB officer who helped change the course of the Cold War by covertly ...

Ben Macintyre, author of a book about the double agent, “The Spy and the Traitor,” told the BBC that Gordievsky managed “in a secret way to launch the beginning of the end of the Cold War.” ...