Did US troops use chemical weapons in Falluja? The answer is yes. The proof is not to be found in the documentary broadcast on Italian TV last week, which has generated gigabytes of hype on the internet. It's a turkey, whose evidence that white phosphorus was fired at Iraqi troops is flimsy and circumstantial. But the bloggers debating it found the smoking gun. The first account they unearthed in a magazine published by the US army. In the March 2005 edition of Field Artillery, officers from the 2nd Infantry's fire support element boast about their role in the attack on...