There is a good article by a sensible Russian journalist. It's in Russian, worthwhile running it through Google Translate.
http://pozneronline.ru/2014/03/7200/
Some excerpts:
...conflict due to the NATO decision to bomb Yugoslavia, which Russia strongly opposed. I remind that neither UN nor EU gave their approval of these bombings. USA decided and implemented... Forceful separation of Kosovo from Serbia, recognized by the West, opened Pandora's box. Beginning with this event, the whole bunch of disagreements between RUssia and USA followed. At the same time the latter have always acted from the position of force, most remarkable example of which is moving NATO closer to the Russian borders, in spite of promises by the State Secretary Baker of 1989.
One thing that Russia could not tolerate under any conditions is the atemmpts by the USA to "take its place" in the brotherly Slavic Ukraine. Not only because that such Ukraine could become the member of NATO, which will then be situated right to the Western borders of Russia. Psychologically Ukraine is "ours" and Ukranians are "our people". Try imagine for a minute a revolution in Mexico, the power is taken by someone like Chaves who invites Russia to place their troops along the Mexican-American border. Can you guess the consequences?
What about Crimea? Strictly speaking it has never been a part of Ukraine. The Presidium of Supreme Sovet that approved Chrushev's decision to move Crimea to the Ukraine did it with 13 votes, while there were 27 members. There was no quorum. But this is not the decisive factor. The thing is that any negotiations with the West are meaningless, they will betray you anyway, that it is time to show that you cannot treat Russian national interests with such attitude.
From myself I will say: such unbelievable activity of the West in the events has nothing to do with the human rights in the Ukraine, nor the noble desire to help "poor Ukrainians", nor the care of Ukrainian unity. It only has to do with the geopolitical interests. The actions of Russia - in my opinion - are dictated not by the desire "to protect Russians, Ukrainians or Tatars", but the same: geopolitical and national interests.