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 the 31st Separate Airborne Assault Brigade dressed in Berkut uniforms), established security checkpoints on the Isthmus of Perekop and the Chonhar Peninsula, which separate Crimea from the Ukrainian mainland. Within hours, Ukraine had effectively been cut off from Crimea. On 1 March 2014, Aksyonov declared Crimea's new "de facto" authorities would exercise control of all Ukrainian military installations on the peninsula. He also asked Russian President Vladimir Putin, who had been Yanukovych's primary international backer and guarantor, for "assistance in ensuring peace and public order" in Crimea. Putin promptly received authorisation from the Federation Council of Russia for a Russian