"Len Deighton has always been fascinated with the Cold War in a way that could be called scholarly...one always feels that the intricacies of espionage and of the Soviet Union's spy apparatus rest on serious research. And he writes with effortless mastery." (The Wall Street Journal)
"A most impressive book, a chronicle of our times, in which the tension, more like a chronic ache than a stab of pain, never lets go." (The London Evening Standard)