Part of our problem over there is that they have a perception that we don't have the guts to finish this. A bomb taking them out is not what they respect.
What do you think they really consider shock and awe... A missile that can get them through a window or men who can be more brutal in combat than they are?
Also, I agree aviation leaves no prisoners, but you better have boots on the ground to make sure the rubble doesn't get re-populated.
That being said, you need to know that we wouldn't be here years later if we were the ones setting the rules of engagement.
"It always made me mad to have to beg for opportunities to win battles." General George S. Patton
I do wish we would use a Neutron bomb or two.
Again, I simply don't like telling our guys to walk through a door to a target that somebody else can reduce relatively safely. You know as well as I do it's not so they can look macho to the jihadis, it's so the jihadis don't get maaaad at us for blowing up their hovels. I'm not talking strategy here, I'm not talking about reducing our boots on the ground in any way, I'm simply discussing what the best tactical means of neutralizing a given city block is.