Political map of Russia & the former Soviet Union 27 February 2014 (Crimean Crisis): In 2010 Ukraine elected a pro-Russian president (Ukrainian presidential election, 2010), only to overthrow him in a revolution four years later when he rejected reforms and closer ties with Europe in favor of a Russian loan (Euromaidan Revolution). Russia responded by massing troops on the Ukrainian border and providing covert military support for a separatist revolt in the Ukrainian republic of Crimea (Crimean Crisis).