I thought it was "weapons of mass destruction." That includes chemical weapons. I could be wrong, but I don't recall them specifying the exact type of weapon, just WMDs.
weap·on of mass de·struc·tion
noun
plural noun:
weapons of mass destruction
- a chemical, biological or radioactive weapon capable of causing widespread death and destruction.
Everybody on the face of the planet already know that Saddam had chemical weapons - for years prior to the invasion.
Everybody on the face of the planet already knew that Saddam had biological weapons - for years prior to the invasion.
What tipped the scales in favor of invasion was the third leg of the weapons triad - nuclear weapons.
Supposed yellow-cake uranium shipments from South Africa and highly advanced research and materials-processing facilities and knowledge-base.
Nobody went to war to take Saddam's chemical weapons away from him - that was old news, predating the Iran-Iraq War of the 1980s.
Nobody went to war to take Saddam biological weapons away form him - that was old news, predating the Iran-Iraq War of the 1980s.
People went to war to stop Saddam from developing and deploying nuclear weapons - a supposed new state of affairs.
Doesn't matter how the arguments for the casus belli were formalized, at the UN, or, more loosely, amongst the American People.
What DOES matter is the focus of the arguments leading up to the formalizing of the casus belli.
And that focus was nuclear weaponry - the NEW element in the weapons triad that could be made to serve as the flash-point for an alarm, sufficient to go to war over.
You know that just as well as I do, whether you choose to concede the point here or not.