Still, we continue to face a terrorist threat. We cannot erase every trace of evil from the world, and small groups of killers have the capacity to do great harm. That was the case before 9/11, and that remains true today. That’s why we must remain vigilant as threats emerge. At this moment, the greatest threats come from the Middle East and North Africa, where radical groups exploit grievances for their own gain. And one of those groups is ISIL – which calls itself the “Islamic State.”