But the problem is, being the cowards that they are, al Qaeda and loyal Taliban have clustered in this city, hiding with civilians. So the military challenge is how to defeat/destroy them, with minimal loss of innocent Afghani lives.
So I agree with you the soldiers must die, but not the civilians. Daisy cutters are good for open areas, where almost anything on the ground is an armed enemy. But in a built up city, it may require a longer time for the Northern Allience guys to go through the streets. So much the better, if it takes a little longer.