What can we do? Not a whole lot. When the US blustered a bit yesterday, I tweeted thusly:
Words are air RT @USNATO: "Today I affirmed America’s strong support for #Ukraine’s territorial integrity & sovereignty"--#SecDef HagelNATO never made a commitment to defend Ukraine, which is a good thing since it would have been incredible... in the sense that it would not be believed. I have long argued against NATO membership for either Georgia or Ukraine precisely because there would little that the US/NATO could do in a crisis such as this (plus the Georgians might just use the security implied by the alliance to provoke Russia).
— Stephen Saideman (@smsaideman) February 27, 2014
So, we can and should give diplomacy a chance, especially with the Ukrainians seeking to make noise at the United Nations. But with Russia as a permanent member of the Security Council, that is not going to go very far.
We simply do not have the assets or the interests to make much of a difference. Yes, this will deeply impact relations with Russia. Russia may find more balancing behavior by those near and far (Stephen Walt was right about "offensive intentions" no matter how hard that stuff is code). The spirit of Sochi apparently didn't last that long, did it?
The big question now will be the usual one--who in Ukraine will be willing to use force: the Russians or Ukrainians?
The only thing for sure is that no one is being fooled by the "armed men" who may not have any flags on their uniforms and vehicles.