Here is a quote from "The Battle for Islam" by Andrew McCarthy at The Corner. It is also discussed at the View from the Right.
The most frustrating thing about "moderate Islam" is that no one seems to be able to say what it entails. The so called "radicals" tell us exactly what they believe and (accurately) cite chapter and verse in the scriptures. The moderates never persuasively refute the radicals — they just say the radicals are too "extreme." This doesn't come close to making the case that the radicals have Islam wrong. If your goal is to persuade other Muslims — and everyone seems to agree that only Islam can settle its internal divisions — that's the case that has to be made.