Ivan Mezhlauk was the brother of Soviet economic planner Valery Mezhlauk , the head of Gosplan from 1934 to 1937 . Both brothers were arrested during the secret police terror of 1937-1938 and were among those executed . Ivan Mezhlauk was arrested on 3 December 1937 , sentenced to death on 25 April 1938 and shot the same day
secret police terror
Great Purge
Ivan Mezhlauk