We didn't get involved in Syria because other better options presented themselves. I for one am done getting involved in regional squabbles or other countries civil wars. We have no obligation to come running every time someone gets their feelings hurt or their peepee's slapped. I don't give a shit if Russia takes over the whole Ukraine, not at all. Is the juice worth the squeeze? Not for me, not one bit. I also don't buy that this somehow reflects on our status as a superpower. It is a territorial dispute that we should have no part of.
I'm no expert, and don't claim to be, but to me this whole mess seems overblown.
I agree with you and I don't, but I largely agree with you. The problem is one of history (and yes, I'm going to violate Godwin's Law).
History has shown us how empires start out conquering smaller nations by diplomacy or force. Eventually you have a behemoth everyone must confront and the behemoth is probably not benign. Nations ebb and flow, but vast enterprises start off as a regional conflict, and then another, and then another...
The Nazi's reminded us that it happens in our modern, civilized world while curiously we ignore how a superpower came into being because this isn't the first time Mother Russia "adopted" the local children. The US didn't exactly come into this world with the land we have now, we took a lot of it from others in bites and gobbles.
Since the fall of the the Soviet Union we've seen nations fragment, but not a lot of land grabbing. Now Putin's back and trying to revive the Bear. Soon a bunch of regional conflicts will become a global problem unless we're fortunate to have Putin pay for a ferry ride across the river Styx like Alexander or some of the Mongol khans.
The real danger is escalation, but at the same time we can't sit back and give the guy a thumbs up. As I've posted earlier we also don't have many options, but we should exercise those available to us. Otherwise we become isolationist and that harms everyone.