This from MEMRI, from Sheik Qaradhawi, the leader of the Muslim Brotherhood (which has purportedly become mainstream compared to some of the more violent groups):
At a convention on the subject of “Pluralism in Islam” which took place in late August, 2004 at the Egyptian Journalists’ Union in Cairo, Sheikh Dr. Yousef Al-Qaradhawi, a leader of the Muslim Brotherhood movement and one of the most important religious authorities in Islamist circles, issued a religious legal opinion permitting the abduction and killing of American civilians in Iraq in order to pressure the American army to evacuate its forces. Al-Qaradhawi stressed the fact that in his view, “all of the Americans in Iraq are combatants, there is no difference between civilians and soldiers, and one should fight them, since the American civilians came to Iraq in order to serve the occupation. The abduction and killing of Americans in Iraq is a [religious] obligation so as to cause them to leave Iraq immediately. The mutilation of corpses [however] is forbidden in Islam.”
Whew! I was worried about that mutilation thing. Glad we got that straightened out.