Stalin's Instruments of Terror: KGB, CHEKA, NKVD, OGPU from 1913 to 1953 by Rupert Butler
Charts Stalin's use of the re-named NKVD to carry out the purges of the 1930s in which millions were arrested and ended their lives in forced-labour camps. This book looks at the organisation of the state's secret police in Russia during this time, its vast network of spies and informers, its units within the Red Army, and the special prisons.