Was discussing this with a bunch of buddies on a run today. From what I gather from the conservatives both on this board and in my running group today they believe Obama should do something about this, but nobody is really sure what.
We could theoretically build up our armed forces, declare war on Russia and eventually try to retake the Ukraine but I don't think anyone, conservative or liberal, want a war with Russia at this point. We could put some economic sanctions on Russia but I don't think they would be ultra effective and would probably backfire against our European allies. We sanction or embargo Russia and Russia would respond by not providing Western Europe with natural gas. Of course Obama could do some insurgency work behind the scenes making the life of the Russian invaders a lot harder (I'm guessing there is quite a bit of that going on already) but Obama can't actually advertise that.
So, if you were president, how would you respond to the recent Russian invasion of Ukraine?