Demographics of Crimea point of time. Turkey has provided the greatest support to Ukraine, which has been unable to resolve the problem of education in the mother tongue in Crimea, by bringing the schools to a modern state. Ukrainian was until 2014 the single official state language countrywide, but in Crimea government business was carried out mainly in Russian. Attempts to expand the usage of Ukrainian in education and government affairs have been less successful in Crimea than in other areas of the nation. Currently two thirds of migrants into Crimea are from other regions of Ukraine; every fifth migrant is from elsewhere
Annexation of Crimea by the Russian Federation revolution that ousted Ukrainian president Viktor Yanukovych sparked a political crisis in Crimea, which initially manifested as demonstrations against the new interim Ukrainian government, but rapidly escalated. In January 2014 the Sevastopol city council had already called for formation of "people's militia" units to "ensure firm defence" of the city from "extremism". Crimean parliament members called for an extraordinary meeting on 21 February. Crimean Tatar Mejlis chairman Mustafa Dzhemilev said that he suspected that the meeting was arranged to call for Russian military intervention in Crimea. In response to this, the Security Service of Ukraine (SBU) said that it would