Why, in his message 20.02.2019 Putin talked about Ukraine?

Because Putin - the President of the Russian Federation, and the Message is an appeal to the Federation Council of the Russian Federation. The address contains a review of the internal problems and recommendations for their solution.\r\n\r\President of Ukraine - Poroshenko. How it interacts with their bodies and how to solve the internal problems of the country is his headache.
Answer add