1.2 million
Reasons why Iraq should not have been invaded .

A study, published in the prestigious medical journal The Lancet, estimated that over 600,000 Iraqis had been killed as a result of the invasion as of July 2006. Iraqis have continued to be killed since then.
The estimate that over a million Iraqis have died received independent confirmation from a prestigious British polling agency in September 2007. Opinion Research Business estimated that 1.2 million Iraqis have been killed violently since the US-led invasion.The number is shocking and sobering. It is at least 10 times greater than most estimates cited in the US media, yet it is based on a scientific study of violent Iraqi deaths caused by the U.S.-led invasion of March 2003.

www.justforeignpolicy.org/iraq