authorities had secured the territory of Odesa Oblast, which became part of the Ukrainian SSR. The oblast was established on 27 February 1932 from five districts: Odesa Okruha, Pervomaisk Okruha, Kirovohrad Okruha, Mykolaiv Okruha, and Kherson Okruha. It was the scene of Soviet genocidal crimes, including the Holodomor of 1932-1933 and Polish Operation of the NKVD of 1937.

In 1937 the Central Executive Committee of the USSR