Are Western Muslims on our Side in the War on Terror?

If so, they're awfully quiet about it:

“You’re either with us,” said President George W. Bush, in a much-maligned speech delivered after 9/11, “or you’re with the terrorists.” At the time, our thoughts turned to whether the United States of America and her allies would have the steel to fight the war on terrorism to a victorious conclusion. Since then, a goodly number of America’s allies have wobbled, especially over Iraq, but even they realize that the United States is not the bad guy. One cannot say the same for the many Muslims living in the West who have yet to pick a side in the war on terrorism.

It shouldn’t be a difficult choice for Muslims. There is nothing in the Koran that sanctions violence on the scale we saw in London on 7/7, Madrid on 3/11, or New York on 9/11. There’s no passage endorsing suicide bombing, or its 7th-century equivalent. Indeed, suicide is a mortal sin in Islam: Muslims know this, and they also know that al Qaeda plays fast and loose with the Koran to justify its nihilist ideology. And yet, disquietingly, most have chosen to sit out this war — to remain insouciant while terrorists and brigands hijack their religion.