Wołyń Voivodeship or Volhynian Voivodeship was an administrative region of interwar Poland (1918–1939) with an area of 35,754 km², 22 cities, and provincial capital in Łuck. The voivodeship was divided into 11 districts (powiaty). The area comprised part of the historical region of Volhynia. At the end of World War II, at the insistence of Joseph Stalin and the Soviet Union during the Tehran Conference of 1943, Poland's borders were redrawn by the Allies. The Polish population was forcibly resettled westward; and the Voivodeship territory was incorporated into the Ukrainian SSR of the Soviet Union. Since 1991 it has been divided between the Rivne and Volyn Oblasts of sovereign Ukraine.