Usually Jacoby is spot on, but this time he is dead wrong. Aggression wins over moderation by their very natures. What is being referred to in Islam as radical or extremism is the historical norm. The reason "radical" Islam was not as visibly active in the late 1960's was due to the armed forces of civilized nations being deployed and used much more readily (and by leaders who knew how to do it). As Muslim nations have become independent, Islam has shown its true colors with Muslims killing each other as readily as they kill non-Muslims. There is a recent saying I like: "Know Muslims, no peace. No Muslims, know peace."