One of my favorite authors of all time is Tom Clancy. The author of The Hunt For Red October, Patriot Games, The Sum Of All Fears and many more, Clancy can weave a web of intrigue in a novel that will keep you turning pages long into the night.
His novels center around the CIA and the intelligence community, and many of the best of his stories are from the era of the Cold War.
Though his novels are fictional, they are based somewhat on reality, albeit loosely. However, the underpinning of many of his novels could very well happen. And it did.
In the 1930s, the Soviet Union recruited an agent in the British government. And they had no idea just how far this spy would go. Kim Philby flirted with communism while at university. Unknown to his closest friends, he never discarded the ideals of the communist philosophy. He just buried them, and lived the outward life of a loyal patriot.
A patriot who just happened to be in the upper echelons of the British intelligence services, MI5 and MI6. Philby fooled everyone, from his own countrymen and colleagues, to his friends in other intelligence services. And he did so for more than thirty years.
Though much of his story is conjecture, and is either buried in the archives of the British intelligence files, or has been deliberately destroyed, Philby caused massive damage to British and American efforts to subvert communism throughout the Cold War. His betrayal gave operation and political advantages to the Soviets, and caused an unknown number of deaths.