Regardless of how poor a job Pakistan might be doing today regarding Kashmir,it's pretty obvious that if a 9th Century knuckledragging pal of Bin Laden takes over there,things could get very bad very,very quickly.
True but wouldn't it be better if the US pulled the carpet under Pakistan's feet (destroying Pakistan's nuclear capabilities) and then work to bring Bhutto and Nawaz Sharief back to power in a democratic election. That way, you have a cleaner set-up and no one will blame the US that it supports dictators.