don't get it twisted, the world must deal with the threat of ISIS...but if we think it is possible to destroy it , that's arrogant, we can with great difficulty defeat the adherents, but the ideology will remain
the allies defeated the 3rd Reich, but  Nazism still remains.
Osama Bin Laden is dead, but Al-Qaeda and the ideology still remains.
and the same with the Taliban they've been damaged but they and the ideology still remain
we must try stop ISIS for now with great difficulty, at great expense, and loss of life maybe, but the ideology will remain and could  resurface,
maybe we can control it, but it would be arrogant to think you can destroy the ideology.....history says differently.......
[the mad wanders off, being serious makes his head hurt]