
So....the Ukraine effectively stage an uprising against their president. He flees to Russia; Russia invade the Crimea who are an autonomous state and mostly populated by Russians. Lots of accusations of political meddling from both sides.
Not fun.

Ukraine crisis: Crimea MPs vote to join Russia
MPs in the southern Ukrainian region of Crimea has voted to formally become part of the Russian Federation.
Parliament said the decision would be put to the Crimean people for their verdict in a referendum on 16 March.
Ukraine's interim government has said any such vote would be unconstitutional.
Crimea, whose population is mostly Russian, has been at the centre of tensions following the fall of Ukraine's pro-Moscow president.