...The best guess is that over 1 million Iraqis have died since 2003. See:
The true scale of the killing can be gauged from the fact that in December 2007, the Iraqi government reported that there were 5 million orphans in Iraq - almost half of the country's children.
US/British intervention in Afghanistan is proving to be similarly catastrophic. Bush and Blair did not invade these countries to bring democracy. Rather, their intention was to guarantee US (and in a minor way British) control of oil supplies (directly from Iraq, and indirectly through Afghanistan)...
...that, and the heroin.