"I would love to see the UN mount a full-scale invasion of Zimbabwe" - Read the UN Charter for starters, then you would know that what you've said is impossible. Next review the active participant track record of the UN and you will see what you've said is impossible.

"that's not going to happen because Mr. Bush has committed every available US troop to his senseless personal vendetta run amok in Iraq," - For a start US troops are present in both Iraq and Afghanistan operating under UN Mandates. Secondly, the level of troops committed amounts to 17% of US total strength - Every available US troop indeed.

If you are going to come out with such Bee-dubya-ell - less emotive crap and more fact. Such as the US and UK has done more to raise the profile of what has happened, and what is happening, in Zimbabwe than most other countries, oh, and George W. Bush and his administration has tried harder than any other to get the UN to shift itself off its big soft lard-assed butt over Darfur than any other.

"a UN police action without US involvement is dead in the water"
Maybe it would have been better for the people of Zimbabwe and Darfur if the US & UK had acted unilaterally in both cases - Oh, but hang on you lot are against that when they've done it in the past.

As Rap says get China to do it, possibly with the assistance of France, Germany and Russia. At least with a couple of those participants captured weaponry could be used as it was them that supplied it in both cases.