Well..... Canada will take Alaska off your hands... makes the map so much better looking. We will give you Greenland instead.
My WWIII scenario had Poland making a grab for part of the Ukraine too (ancient bad blood between the two) and Moldavia fighting with Romania.
Of course mention Crimea and all I can think of is the Cross of Iron book by Willi Heinrich.
http://www.amazon.com/The-Cross-Iron.../dp/0553147870