Islam itself is the problem. Not merely “radical” Islam.
And there you have it. By any reasonable review of their scriptures, Mohamed was a terrorist.
By defining the problem as "radical" islam, we invite those muslims who are moderate to help us defeat it.
Then, if any moderate muslim decides to become radical, he becomes the enemy.
I agree that the Koran teaches what the radicals preach. The book doesn’t allow for moderates and pacifist islam is a lie. It doesn’t exist in the pages of that book.