re: chickens come home to roost
Pakistan created its own vultures, being a major source of Taliban support during their takeover of Afghanistan. There's a good article (an excerpt from a book) here. More history here.
Bhutto found out all about chickens coming home to roost.
Do Pakistanis really think the Taliban would be leaving them alone right now if it wasn't for the U.S.? Western Pakistan is where the Taliban originated.
Had 9/11 never happened, the Taliban would still be slowly working their way east through Pakistan today.