Problem is, they ain't destroyed yet. The remnants of AQ and the Taliban just retreated across the border and have since regrouped and reoccupied a lot of area. The problem now is how to find, fix and destroy them without pissing off the tribes. Piss off the tribes, absolutely nothing gets done.
If we leave, the thinking is the current government will fall and we'll be right back where we started. I think in both Afghanistan and Iraq, we've given up on the "pro-American" gov't and we'll just settle for a stable one that doesn't actively hate us.
Agreed. I think the ultimate end-state in both theaters is regional stability - fighting terrorism has kind of become incidental to that goal. Until Afghanistan is reasonably stable, Pakistan will be (more) unstable, then India, etc, etc.
Brett