On 27–28 February 2014 in the aftermath of the Ukrainian revolution, Russian troops seized control of most of the Crimean peninsula of Ukraine located on the northern coast of the Black Sea—roughly from Sochi, including civil buildings, airports, and military bases. On 1 March 2014, the Russian legislature approved the use of the Russian military in Ukraine, and Russian officials stated that their military forces in Crimea were not a breach of existing agreements between Russia and Ukraine. The Ukrainian response has been muted trying to find a diplomatic solution, with no military action on the part of Ukraine's government, which was formed in Kyiv less than a week before the intervention. Russia vowed troops would stay until the political situation was "normalised". A referendum on whether Crimea would separate from Ukraine was held on 16 March 2014—the same day as the closing ceremony of these Games.