Ukrainian government is the result of 'revolution', which has been sponsored by Obama. It consists of nationalists. They fight for clearance of Ukrainian race. So, they try to kill all Ukrainian people, which doesn't want to speak Ukrainian language only. They try to kill all Ukrainian people, which want to listen to Russian music and which want to watch Russian movies.
Lots of such people live in the Eastern Ukraine, regions Slavyansk, Kramatorsk, Odessa, Luhansk.
But the problem is that these people have guns. And the new government is not able to kill them easily. And now they decided to use combat helicopters, but the Ukrainian army has no units, which are able to fly!
UN combat helicopters, used in Africa earlier, are all what they have....