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 breakaway republic into Russia. On same day, the "de facto" Supreme Council renamed itself the State Council of Crimea, declared the Russian ruble an official currency alongside the hryvnia, and announced that Crimea would switch to Moscow Time () on 30 March. Putin officially recognised the Republic of Crimea 'as a sovereign and independent state' by decree and approved the admission of the Republic of Crimea and Sevastopol as separate federal subjects of Russia. The Treaty on Accession of the Republic of Crimea to Russia was signed between representatives of the Republic of Crimea (including Sevastopol, with which the rest