What is happening between Russia and Ukraine was predictable after the Soviet Union disintegrated. By invading the autonomous Republic of Crimea, a republic made of 58% ethnic Russians, Russia is moving toward fusing its people with the same culture and history. It is logical as long as it is the will of the people of both Russia and Crimea.
The cold war is over. The West’s threat of economic sanctions against Russia will only make things bad for Ukraine. As the Bateke of Congo say, “A bad habit is like fire; you can’t play with it and expect not to get burnt.”