Now thats an unfair comparison. There were never that many interest or citizens of the US in Iraq as Russians in Crimea.
Since the revolution i hoped that Ukraina and EU do the most reasonable thing: Declare that Russia can keep the military base there (in the best interest of everybody), declare that the crimea is automonous in many aspects, and make an agreement that Russian is the second official language in Ukraina, and the first in the East part and the Crimea. Make a trade agreement and offer Russia Ukraina as a marketplace to access EU. Give Russia the prospect of becoming associated (not member, but free trade) with the EU via this way.
History has no rewind button. Russian speaking population is now living everywhere in the former Soviet union, and we have seen example of discrimination of Russians in other countries (Baltic states) before, where in some it was forbidden to speak russian.
The nationalist political games which the west does not keep a safe distance from are not good.