Justin Raimondo and Tom Engelhardt make essentially the same point: the resistance to the results of the Lancet study (that 655,000, or more accurately somewhere between 400,000 and 900,000 more Iraqis have died because of our invasion than would have otherwise died) is largely driven by a desire that it not be true.
At Creative Destruction, thought, Bob Hayes has some real objections to the way in which the study was carried out (see here and here). Amongst them are that the study did not do enough to prevent duplicate reporting and that it concentrated in urban areas, which might not be epresentative of the country as a whole (he has cause to believe that these areas would likely have disproportionately high casualties).
Steve Sailer brings his usual rationality and calmness here and here.
That is all.