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 networks there is a movement to gather volunteers who served in the Russian army to go to Ukraine. On 28 February President Putin stated it was of "extreme importance of not allowing a further escalation of violence and the necessity of a rapid normalisation of the situation in Ukraine" in telephone calls with key EU leaders. Already on 19 February the Russian Ministry of Foreign Affairs referred to the Euromaidan revolution as the "Brown revolution". The Federation Council approved that Russia may introduce a limited contingent of Russian troops in Crimea for the security of the Black Sea Fleet and