Also, a wiki link on Bhutto:
Personally, I'm not familiar with the politics of that region of Earth. That said, however, I do know this: Pakistan is one of several countries in that region to hold a nuclear arsenal, and it also happens to be one of the most politically and socially unstable countries in the world. And what do you know? It's a country that the US's Bush Administration screws up in its "war on terror."
My question now is: What happens? IMO, if General Musharaff is not screwed before, we can now stick a fork in him, because he is done politically. Whether or not he has a hand in this attack or not, people particularly in Pakistan will almost certainly tie him with this event in one way or another. The state of emergency fiasco, plus Mrs. Bhutto's assassination, has just about stripped him of every ounce of credibility he has left (if he had any to begin with).