An advertising poster on a street in Simferopol, the capital of Crimea, mocks the political leaders of the opposition parties that make up the new transitional government of Ukraine. From left to right: leader of the Udar ('Punch') Party, Vitali Klitschko; the leader of Batkivshchyna (All-Ukrainian Union 'Fatherland') Party Arseniy Yatsenyuk and the leader of Svoboda (Freedom) Party Oleh Tyahnybok. On 16 March 2014 a referendum was held in Crimea to decide whether it would stay part of Ukraine or secede, and potentially merge with Russia. According to local officials, over 95% of the voters chose to join with Russia. The region's Tatar population, which makes up around 12% of the total, largely boycotted the vote. On Tuesday, 18 March 2014 President Putin of Russia signed a treaty which paves the way for the annexation of Crimea. The peninsula was part of Russia until 1954 when it was transferred to Ukraine by Nikita Khrushchev.