ogpu Russian police N.K.V.D. antecedent Pre-K.G.B. group Old Soviet secret police org KGB predecessor Russian secret police N.K.V.D.'s predecessor Lenin's police org U.S.S.R. police Soviet police initials Kremlin police Forerunner of the NKVD and KGB Fearsome initials, now MVD Old Russian secret-police org. Lenin's police org. Old Soviet secret police org. K.G.B. predecessor Forerunner of the K.G.B. Cheka's successor Soviet police before N.K.V.D. N.K.V.D. predecessor N.K.V.D. forerunner Stalin's secret police Former U.S.S.R. secret police Russian secret police: 1922–35