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You are completely ignoring the inner conflict which sparked a civil war in Ukraine. You seem to think this all happened AFTER Russia "invaded". The newly installed Ukraine government would have definitely attacked the Pro-Russian Separatists in Crimea, had it not been annexed. And exactly that would have led to a great loss of life in Crimea. If you don't believe thats what would have happened, then you do not really understand the conflict.
You think you're helping by provoking more wars with your attempt to force your own specific brand of "democracy" on other countries? Hows Afghanistan doing? Or any of the 39 sovereign nations after the US invaded them? Lets ask Iraq on their thoughts on the matter.
Or maybe you want to talk about a more Crimea-relatable invasion?
Invading Panama because it was "necessary to safeguard the lives of U.S. citizens in Panama" also "coincidentally" worked out in America's favor (aka helping America become the big daddy of the oceans). What a coincidence! See, when the west invades, its "different". Right?
What did NATO do except provoke a war in Georgia and then leave them to their own devices? Where were the American heros? Where was NATO and their ambiguous promises? All they did was instigate war and then let them burn.
As I see it, Russia is fighting to protect its influence while America fights to spread its influence. Hard to say which has the moral high ground. I would say both are wrong. But Russia's hand is being forced, is the main difference.
Russia is going to protect its influence and will lash out if you keep forcing it into a corner.
edit:
out of respect for the WO, I am going to let this be my last political post on Ukraine. Either you get what Im talking about or you never played CIV 4. Don't @ me.