Destroy ISIS. This illegal state if allowed to exist will follow domination and genocide not unlike Hittler's Germany.
We have learned from history that these existential threats do not go away.
The Pope has already called on the world to stop the impending genocide of the Christian minorities in the ISIS state. We are the only remaining super power, it is out duty to engage evil wherever it plants itself. Gathering support of other nations is a must; however, we must take the lead.
With the execution of an American citizen --his beheading, the President must act now: use all military force available to destroy all ISIS forces and turnover control of the illegally seized land to the corresponding country states.