If you want to see what’s probably going to happen to Ukraine, take a look at the New York Times map below. In the orange area to the west, people speak Ukrainian and voted for the opposition in the last election. In the blue areas to the south and east (including the Crimean peninsula), most people speak Russian and voted for the President who was recently impeached.
It shouldn’t be a surprise if Russia eventually absorbs the blue areas. The West will strongly object, but nothing too bad should happen so long as the Russians don’t move too far west and their natural gas keeps flowing through Ukraine to Europe. On the other hand, nothing very bad should have happened after Franz Ferdinand was shot in 1914. (Other maps are here.)