Stalin's secret war : Soviet counterintelligence against the Nazis, 1941-1945
"The Soviet-German War of 1941-1945 was the most extensive intelligence/counterintelligence war in modern history, involving the capture, torture, deportation, execution, and 'doubling' of tens of thousands of agents -- most of them Soviet citizens. While Russian armies fought furiously to defeat the Wehrmacht, Stalin's security services waged an equally ruthless secret war against Hitler's spies, ...



