Then we have two options: To put in a repressive military dictator (because the people don't WANT a Moderate Muslim friendly to the West, the only way we could install one is through repression), or to allow Usama's buddies to take over, which is exactly what Usama wants.
If we do put in the military dictator, we'll have to defend him for decades in the UN. If we don't, the states will become extremely poor, the terrorists will take over, and will take permanent control, which is exactly what Usama wants.
If, on the other hand, we don't go to war with these countries, they will continue to support terrorism.
Which is exactly what Usama wants.
What can we do? For starters, we can kill him. Then we can figure out where to go from there. This will not be easy.
NO QUARTER!