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.
Post-Soviet states
Russia, Belarus, Kazakhstan created a customs union that entered into force in July 2010. Ukraine, Kyrgyzstan and Tajikistan indicated interest in joining at the time. Russia has been eager for Armenia, Moldova and Ukraine to join the custom union instead of the European Union, and the Moldovan break-away state of Transnistria has supported this. In 2013, Kyrgyzstan and Armenia announced plans to seek membership, but division over the issue in Ukraine led to the 2014 Ukrainian revolution after the Ukrainian government backed out of an EU Eastern Partnership in favor of the union. In 2014, voters in the Moldovan autonomous region of Gagauzia rejected closer ties to the EU in favor of the union.