| Answer | Crossword Clue |
|---|---|
| OGPU | Former Russian police group. |
| OGPU | Former Russian police. |
| OGPU | Russian police |
| OGPU | Russian secret police |
| MVD | Russian secret police. |
| GPU | Russian secret police |
| KGB | Russian secret police |
| OGPU | Old Russian secret-police org. |
| OGPU | Russian secret police: 1922-35 |
| OGPU | Forerunner of the feared N. K. V. D., Russian secret police. |
