Frankly, this situation is starting to border on the "slightly terrifying" level for me. At this point, Ukraine is fucked. A Crimean breakaway state or semi-independent partially-recognized state (like South Ossetia or Transnistria) is a given at this point. My concern, though, is that this might end up being a broader conflict. The Security Council has already been brought into things (while I recognize that it's pretty useless here given Russia's membership, it may prove a useful venue for negotiations with the Russians) and, most alarming to me, Lithuania has invoked Article 4 of the North Atlantic Treaty. It reads as follows:
The Parties will consult together whenever, in the opinion of any of them, the territorial integrity, political independence or security of any of the Parties is threatened.
Which means NATO is getting involved.
At this point, it seems we're about one dead archduke away from something upsetting. Not a very broad conflict, probably, but a drawn-out, low-level Eastern European shooting war that challenges the current balance of power between the EU/West and Russia.
Not great.