The Daily Beast: "BAGHDAD, Iraq—The general commanding coalition forces in Iraq predicts it will take two years of hard work to clear the so-called Islamic State from its twin capitals of Mosul and Raqqa, and then to burn out the remnants that will likely flee to the vast empty desert between Syria and Iraq."In the last two years ISIS has doubled in support around the world. In Russia, South Asia, East Asia and especially in Africa. They have hit a nerve with oppressed people everywhere, including non-muslims. They are the tip of the iceberg of anger from 100's of years of western colonial oppression. The more they are bombed, the more they grow. Two years from now they will be twice as big.
Here is a better idea. Why not leave them alone. Bring the troops home. Use the money to undo the wasteful sprawl system and provide people with car-free cities. That would save enough money and energy that oil wars would not be necessary and Americans could all have Medicare and free education.