UN TROOPS and AUTONOMY? NO. WAY.
The first place they'd go would be 'Palestine' (although as competent as the UN usually has proven to be, they'd never be able to find it, because it's not on any map), and make certain they made the situation far worse than it already is.
This is the truth: no matter how dire the situation is, the UN can ALWAYS make it just that much worse. Darfur? One of the greatest failures of the UN in its long, sad, comic-opera history. By the time the UN gets around to doing something, there won't be anybody left to save. Problem solved.
And this is ALSO the truth: the best thing that ever happened to the Iraqis and our mission there was the UN bug-out, which they were just itching to do, both for reasons of the basest cowardice, AND the assumption by all the self-important double-dealers that make up this gang of vipers that it would help blow the whole project, and humiliate the US, who, it shall be remembered, and the UN has never managed to forget, never depended upon UN approval to act in our own national interest.
So, the hell with the whole useless - no, DANGEROUS - lot of 'em. Their mission has been a dangerous, expensive failure, and there is nothing of value that compares with what they've cost, in blood, treasure, time and ill-will.