# Cheka

> national security agency of Soviet Russia (1917–1922)

**Wikidata**: [Q203023](https://www.wikidata.org/wiki/Q203023)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Cheka)  
**Source**: https://4ort.xyz/entity/cheka


## References

1. Freebase Data Dumps. 2013
2. Treccani's Enciclopedia on line
3. Enciclopedia Treccani
4. Dizionario di Storia
5. Bibliography of the History of the Czech Lands