^Does that really matter what does "Obama" want with Ukraine? (and I put Obama in quotes to denote he's not a self-sufficient politican). You don't ask a burgler what does he want, you shoot at him. Nevertheless I've shared my opinion on the matter multiple times already, long story short -- it supposed to be a Yugoslavian scenario.
Here's factology of the US involement aside from the official one for those who have missed:
1) US Army Attache Assistant is scheeming a provocation with represntatives of Nazies (Labaychuk, one of the leader of Trizub organization, which served as a basis for today's Right Sector) and Ukrainian general staff command (Protsik).
2) Yakimenko testimony suggests that current SBU (Ukrainian secret service) chief, Nalivaychenko, handed over personal files of his employees to CIA, effectively making him a CIA plant. Previously Nalivaychenko has been suspected in connections with Nazies and, in fact, has been caught on tape in one of their training camps (btw their training camps exist not only in Ukraine, there're camps In Poland and Baltic states).
3) Yakimenko as well stated that the main culprit behind the shootings of February 20th is Parubiy, Maidan Commadant, previosuly the leader of Front for Change party, that joined with Yatsenyuk's Batkivshchyna party. He's the man of Yatsenyuk.
4) Indirect evidence to that is Ashton-Pate converstion that has been caught on tape, new coalition is the most probable mastermind behind this they suggest .
5) Yatsenyuk has been officially recognized as absolutely legitimate by Obama et al, Nuland-Pyatt conversation suggests that he was planned as their protege from the very beginning, effecively making him their proxy.
Bottomline. By themselves each of these facts do not mean much. But you can't ignore Yakimenko and say it was his opinion, because he knows these things. He used to work in SBU for years, and has been appointed to his position in January of this year. It was him who announced "a counter-terroristic operation", which apparently failed due to how events went in February and March. Of course, there's a chance he's lying, and each of these facts is a set-up and simply put a conspiracy -- take it as you want, not going to persuade anyone.