The Ukrainian Soviet Socialist Republic, also known as Soviet Ukraine, was one of the constituent republics of the Soviet Union from the Union's inception in 1922 until its breakup in 1991. In the anthem of the Ukrainian Soviet Socialist Republic, the republic was referred to simply as Ukraine. The republic was governed by the Communist Party of the Soviet Union through its republican branch, the Communist Party of Ukraine, as a union republic of the Soviet Union, which existed as a highly centralized one-party state.
The Ukrainian SSR was established by the Bolsheviks following the defeat of the Ukrainian People's Republic in the Soviet–Ukrainian War during the Russian Civil War. As a Soviet proto-state, the Ukrainian SSR became a founding member of the United Nations along with the Byelorussian SSR, even though they were legally represented by the All-Union state in its affairs with countries outside of the Soviet Union. Upon the Soviet Union's dissolution and perestroika, the Ukrainian SSR was transformed into the independent state of Ukraine.