Ben Macintyre has written a fantastic factual book, [b:The Spy and the Traitor: The Greatest Espionage Story of the Cold War 37542581 The Spy and the Traitor The Greatest Espionage Story of the Cold War Ben Macintyre https://i.gr-assets.com/images/S/compressed.photo.goodreads.com/books/1522906662l/37542581.SY75.jpg 59145602] , which reads like a thriller novel which you simply cannot put down. The book is a testament to the significant contribution Oleg Gordievsky made to ensuring the Cold War remained without escalation into all out war and helped ensure effective diplomatic relationships could be established between the USSR and NATO allies. Ben Macintyre has diligently researched the subject matter drawing on open source information, first hand accounts and other documents in order to develop a coherent story that immerses the reader into the various situations Oleg Gordievsky found himself in. The story provides a roller coaster of emotions providing a visceral glimpse into the Cold cold war spy world where the stakes are at their highest.This fascinating novel is worth putting on your reading list , I am certain you will not be disappointed.