The so called caliphate will be crushed. The challenge will be through the fingers of that crush are gonna come hundreds of very, very dangerous people. They will not all die on the battlefield in Syria and Iraq, there will be a terrorist diaspora some time in the next two to five years like we've never seen before.
We must prepare ourselves and our allies, especially in western Europe, to confront that threat. Because when ISIL is reduced to an insurgency and those killers flow out, they will try to come to western Europe and try to come here to kill innocent people. We have to keep our eye on it and be ready for it.