Not sure how much, if any, of this I agree with, but I found Theodore Dalrymple's essay, "When Islam Breaks Down," in City Journal well worth reading, if only for its conclusion:
Islam in the modern world is weak and brittle, not strong: that accounts for its so frequent shrillness. The Shah will, sooner or later, triumph over the Ayatollah in Iran, because human nature decrees it, though meanwhile millions of lives will have been ruined and impoverished. The Iranian refugees who have flooded into the West are fleeing Islam, not seeking to extend its dominion, as I know from speaking to many in my city. To be sure, fundamentalist Islam will be very dangerous for some time to come, and all of us, after all, live only in the short term; but ultimately the fate of the Church of England awaits it. Its melancholy, withdrawing roar may well (unlike that of the Church of England) be not just long but bloody, but withdraw it will. The fanatics and the bombers do not represent a resurgence of unreformed, fundamentalist Islam, but its death rattle.
Whole thing here.
[Link via Arts & Letters Daily]