"attempt to calculate how many more Iraqis have died since March 2003 than one would expect without the war. Their conclusion, based on interviews of households and not a body count, is that about 600,000 died from violence, mostly gunfire."
I guess I'm a slow reader. Can you point out where that says "at the hands of US troops"?
Maybe I'm misreading it, but it seems to me that the quoted statement very clearly includes deaths caused by the insurgents, and deaths caused by the general deterioration of living standards in a war torn country.
Compassionate conservatism - bringing you a kinder, gentler torture chamber