What was Russian secret police called?

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Tags

1. #soviet
2. #cheka
3. #vladimir
4. #first
5. #security
6. #after
7. #december
8. #police
9. #there
10. #revolution
11. #succession
12. #agencies
13. #decree
14. #lenin
15. #secret
16. #called
17. #state
18. #october
19. #organs
20. #created