Polish Soviet Socialist Republic,[lower-alpha 1] abbreviated to Polish SSR,[lower-alpha 2] was a proposition by the Provisional Polish Revolutionary Committee to establish a constituent republic of the Soviet Union for Polish population, that emerged during the Polish–Soviet War in 1920. The idea assumed the formation of the Soviet republic from the territory of Second Polish Republic, following the Soviet victory in the war, however it was never executed, as Poland won the war in 1921.[1][2]