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 "to ensure proper conditions for the people of Crimea to be able to freely express their will". Defence Minister Sergey Shoygu said the country's military actions in Crimea were undertaken by forces of the Black Sea Fleet and were justified by "threat to lives of Crimean civilians" and danger of "takeover of Russian military infrastructure by extremists". Ukraine complained that by increasing its troop presence in Crimea, Russia violated the agreement under which it headquartered its Black Sea Fleet in Sevastopol and violated the country's sovereignty. The United States and United Kingdom also accused Russia of breaking the terms of