YES to the first question and NO to the second.
ISIS is an external threat, and can be defeated by a small number of dedicated warriors (ie, the military).
Radical Islam is an internal threat, and only can be defeated by the resolve of society. But Western society has no such resolve, and will not be rallied in time.
Well stated and true unless we can organize and educate those asleep. Can we - it doesn’t look promising - but we have to try.