The Middle East has been fighting a sectarian war of one kind or another for 3000 years! We have no hope of changing this. There is no amount of education, occupation, control that will ever change their hatred of each other. We can only hope to contain the violence in the Middle East.
If we didn't feel we needed their oil so much, we would leave them alone to their fight.
Instead of occupation, maybe we should find a way off the oil teat!