Ukrainian Soviet Socialist Republic
The Ukrainian Soviet Socialist Republic (Ukrainian SSR or UkrSSR or UkSSR; , УРСР ; , УССР ; see "Name" section below), also known as the Soviet Ukraine, was one of the constituent republics of the Soviet Union from the Union's inception in 1922 to its breakup in 1991. The republic was governed by the Communist Party of Ukraine as a unitary one-party socialist soviet republic.
Historical background of the 2014 pro-Russian unrest in Ukraine
Soviet premier Nikita Khrushchev transferred Crimea from the Russian SFSR to the Ukrainian SSR in 1954. This event passed with little fanfare, and was viewed as an insignificant "symbolic gesture", as both republics were a part of the Soviet Union and answerable to the government in Moscow. Crimean autonomy was re-established in 1991 after a referendum, just prior to dissolution of the Soviet Union.