After ISIS, there will be something worse. Islam has been producing "radicals" non stop from day 1 -  consider  the original "assassins" in the 1100's. Until and unless we acknowledge the role Islam itself plays in spawning terror, "experts" will be shaking their heads in wonder at the mysterious "radicalization" of Muslims who radicalize the same way all around the world, and have been doing so ever since a caravan raider became a prophet.