The Ukraine Crisis
Russia and Western Europe are fighting over Ukraine for economic reasons. The EU offered a great deal to get them into trade. Russia saw that they would be losing the money they are making off of Ukraine if they took the EU's deal, and has now begun to take Ukraine over by force from south to north.
For this conflict to end, Russia will either take over all of Crimea and stop, they will take over Crimea and keep invading until a war begins, or they will be stopped by EU military efforts.