The recent events in Pakistan bear watching closely. The ISI, Pakistan's intelligence service, has never been completely on board with Musharraf. If they stage a coup, and set up an extremist Islamic government, I would bet good money that we would intervene. If not us, India almost certainly would. Best case scenario, Musharraf asks us for covert help, allowing us to root out Al Qaida from their tribal regions. That is, assuming that he isn't allowing this already.