Isis last I saw had a total force of about 30-50k wiping them out should have not taken but a short dedicated overwhelming ruthless effort.... Something our Military is capable of, but our political leadership has not been willing to do for my lifetime.
Wiping them out is hard to do when they take whole cities hostage and are embedded among the innocent, and have many captive “brides.” We would have to stoop to their level. However, I do think we should blow up the trucks they are using to take oil to Turkey. Drop message to truck drivers they have 1 minute run like heck, then bomb the trucks.