Question: Which Soviet Union dictator did secret police officer Stainslav Redens work for?
Sentence (from "Stanislav Redens"): Stanislav Frantsevich Redens (Russian: Станислав Францевич Реденс , Polish: "Stanisław Redens" ; May 17, 1892 – January 21, 1940) was a Soviet secret police official, one of those responsible for conducting mass repressions under Joseph Stalin.
Relevant evidence: Yes