I think it would be a good lesson for Europe if the US stands by and does nothing. It might scare them into increasing their military budgets so we don't have to carry most of the load. Most realist have known about Putin's ambitions for a long time as he has been quoted as making remarks that he wants these countries back. I think Europe needs a reality check. They would probably buy weapons systems from us and the US aerospace sector would get a big boost foreign. The same thing is already happening in Asia now that China's recent territorial ambitions have everyone scared.
I wonder what the Ukrainian Femen movement is doing now that it might get violent over there. I suspect that they ran for cover. After all, fighting wars is a mans job, right? Time to stop protesting and hide. They must have it really bad over there for them to be so dissatisfied. I wonder what the Ukrainians have been doing to them to make them feel so disenfranchised. My understanding is that Ukrainian Femen have been helping South America women orgainze. So many unhappy women in the world. At least the men in these countries can't blame this on the US. They are going to have to look to themselves.