1) Forerunner of the KGB 2) Former USSR secret police 3) KGB ancestor 4) KGB forerunner 5) KGB precursor 6) KGB predecessor 7) Kremlin police 8) Monogram of secret police 9) NKVD antecedent 10) NKVD forerunner 11) Old Russian secret-police org 12) Old Soviet secret police org 13) Precursor to the KGB 
Ob”edinennoe gosudarstvennoe politicheskoe upravlenie ([All-Russian] Unified State Political Directorate). The security police from 1923 to 1934; successor to the GPU. (Alternative term: VOGPU.)
early security and political police of the Soviet Union and a forerunner of the KGB (q.v.).[2 related articles]
Name 1923-34 of the Soviet secret police, later the KGB. ...
The OGPU was the name of the Soviet Military Intelligence service during the period 1923 to 1934.
Unified State Political Directorate. The security police from 1923 to 1934; successor to the GPU.