So how many million men women children do you figure we'd have to kill?
Turn that around. How many more American men, women and children would die if we did not respond with overwhelming force to such an attack? It's up to the "moderate" Muslims to rein in their wacos. We must protect our own first.
Actually I don't think we'd need to kill all that many. Give them advance notice and they can flee the target areas, but the targets must be places of extreme signifigence to the terrorists.