From the Oprichnina to the Decembrists (1565-1825) -- The Third Section under Nicholas I (1826-1855) -- The Third Section under Alexander II (1855-1880) -- The nineteenth-century Okhrana (1880-1900) -- The Okhrana in the Age of Assassinations (1901-1908) -- The decline and fall of the Okhrana (1908-1917) -- The Cheka (1917-1922) -- The GPU/OGPU (1922-1934) -- The NKVD under Yagoda and Yezhov (1934-1938) -- Beria and the NKVD/NKGB (1945-1953) Beria and the MVD/MGB (1945-1953) -- The KGB under Khrushchev (1954-1964) -- The KGB after Khrushchev (1964-1970.).