There aren't enough troops (collectively considering US, UK, Canada, locals) to make a substantial difference. The idea now is to hold ground and build (mostly bunkers and barracks, but hopefully schools too...insh'allah). It's a good idea, but again you need more soldiers on the ground, especially from the Afghani side. They could all pull out, but then that gives the Taliban the confidence to go after Pakistan, which has nuclear weapons. Due to tensions between Indian and Pakistan, this may create one sticky situation. But hey, the population problem in India may finally be averted.

I'd like to see some change in Afghanistan though, albeit without massive deaths on either side. You know something is up when a group of cowards blow up massive, ancient Buddhist statues and force Hindus to wear yellow badges out in public.