This is a long story. It is necessary to start with confrontations on the Maidan In Crimea (in Simferopol there were clashes before the Parliament, pro-Ukrainian and pro-Russian activists on February 26, 2014. On February 27, the Russian special forces seized the Crimean Parliament, under the threat of weapons, Crimean deputies take necessary decisions The Crimean prosecutor and his deputies refuse to sign them, then they appoint Natalia Poklonskaya in his place.Pseudo-referendum in the Crimea is appointed on May 25, 2014. However, understanding that the transitional Ukrainian power can grow stronger and interfere mu, it is transferred on March 16. All this can be found, if you have the desire.