Across
- 2. massacre. Slaughter of thousands of Polish officers during WW2
- 5. Leader of the Cheka, 1917
- 6. Plot. Beria's last major purge
- 8. Effective source of cheap labour. Controlled by NKVD
- 10. Most labour camps were in this part of Russia
- 11. Moscow HQ of the Secret Police
Down
- 1. Secret Police detachment in the Red Army
- 3. Became chief of KGB in 1967
- 4. Extension of the terror to everyday people
- 7. Masterminded the Moscow Show Trials of 1936
- 9. Cheka became this in 1922
- 12. Became chief of NKVD in 1938