NKVD troika
NKVD troika or Special troika (Russian: особая тройка, romanized: osobaya troyka), in Soviet history, were special quasi-judicial proceedings composed of three officials from the security police (for much of the troikas' existence, the NKVD, hence the name) who issued sentences to people after simplified, speedy investigations and without a public trial. The three members acted as ad hoc judges.