Fact is Saddam did use water as a weapon.
SADDAM water wars
At Karbala, U.S. troops stumbled upon 55-gallon drums of pesticides at what appeared to be a very large "agricultural supply" area, Hanson says. Some of the drums were stored in a "camouflaged bunker complex" that was shown to reporters - with unpleasant results. "More than a dozen soldiers, a Knight-Ridder reporter, a CNN cameraman, and two Iraqi POWs came down with symptoms consistent with exposure to a nerve agent,"
A rocket that can accept toxic chemicals into its warhead near a 55-gallon drum of cyclosarin-based "pesticide" is a chemical weapon, and it should be defined as such.
Oh and I guess O'Reilly lied, if you claim that changing one's opinion is lying.
I'm sure I can find more to defend these Fox reports, but unfortunately I have work to do.