If the best we can come up with is remove a dictator with no real power to influence the world militarily or otherwise, and after four years of Iraqi's not cooperating with an occupier, subjugate, enforce, utterly destroy major cities, perhaps we should leave them to Iran.
Whip listen to what you are saying.
"summarily executing every man, woman, or child even suspected of resistance."
Thats not right, that's not the moral guiding light this country is supposed to be for the world. That is totally ass backwards from why we got into this war for real, in the first place. Besides, thats won't accomplish much, it certainly isn't right,
I'm surprised at you, the voice of reason.

Surprised that kiling civillians, on the whim of suspicion is best solution you can come up with. That's not fighting a war, thats allowing murder. Genocide.
You fight wars to end the violence, to stop the slaughter, not to start it. We fucked up in a big way, with a piss poor post war plan, lack of an effective plan B, no plan C, and sure as hell no Plan E, i.e. exit.
No timetables
No acknowledgment of the problems by the administration
No commitment of the forces necessary and realistic goals at the onset are what have made this situation what it is today and has been for years. Not the success of the terrorists/insurgents. They were going to do whatever they were going to do no matter what our actions.
I'll agree the line is fine between murder and collateral damage yet, just slaughtering people would make us no different then the terrorists who would do the same, that is important because we are different.
They have real problems to solve in Iraq, and it is their problem to solve.
"We are fighting a decidedly uncivil and compassionless enemy"
The fight is over between us an the armed forces or Iraq, is has been for some time. This uncivil and compassionless enemy, we fight one day and welcome with open arms the next. Wars are never civil. If they were, we would be at war always. The enemy in this case, is much less civil because he/she is irregular and not bound by any rule of law, war or otherwise.
I agree with you, leaving sooner rather then later, and leaving them Iraqi's and perhaps the Iranians' to themselves would be wiser then remaining forever.