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.
Eurasian Economic Union
Ukraine submitted an application to participate in the Eurasian Economic Union as an observer in August 2013. Viktor Yanukovych's decision to abandon an association agreement with the European Union and exclusively pursue integration with the EAEU was a key factor in the Euromaidan protests that ended his term as president of Ukraine and led to the Crimean Crisis. The country's membership in the EAEU was seen by some analysts as the key to the success of the union as Ukraine has the second largest economy of any of the 15 former republics of the Soviet Union. With high tensions between Russia and Ukraine in the wake of the crisis, Ukraine decided to pursue integration with the EU.