When you consider that the socialist EU and the US seem to be willing to capitulate entirely to Islam, and also consider that Putin is at least somewhat willing to deal with Russia’s Muslim problem (although, unfortunately, not on the level of Stalin), it may just be in the Crimea’s interests to ally with Russia over the EU. NATO seems to be more than willing to help out Islam spread across the world like the cancer it is.
Russia's Muslim population is 14% and growing very fast.
Putin makes his Muslim population happy by supporting Muslim Iran, supporting Hamas, sending Vostok Battalion Muslims to invade Christian Georgia and Ukraine and disrespecting his wife by having a Muslim mistress.