For the most part, the fundamentalist Christians have forsworn the sword (miltancy) for the meeker and more civilized "outreach and missionary" approach. As we see in the plight of the women on trial in Afghanistan for teaching Christianity, even this approach is punishable by death from Muslim fundamentalists. One could hardly have a starker contrast.
Anyone who doubts there are millions of fundamentalist Muslims that are militant in the strictest sense of the word has not been reading newspaper or watching TV for a very long time. Arab moderates have never seemed to get the hang of how to handle this branch of Islam--and they don't want anyone else to deal with it either--lest a fellow Muslim be harmed. That seems to be a pernicious doctrine that will not solve the problem for anyone.
Make no mistake. This IS a religious war, foisted upon us by the fundamentalist Muslim factions. The now infamous "root causes" are found within the Muslim religion and not within the foreign policies of the United States or the territorial claims of Jews and Palestinians.