From your post: ...but with our intelligence and the intelligence services of every country in the UN Security Council saying he most likely had WMD (because he put so much effort into hiding something from the inspectors, finding out where they would be and cultivating spys in the UN that told him the movements, it made no sense for him to do that while hiding nothing, and with his moles it made sense why they could never find WMD).
And it was the US that made the vast majority of false claims.