[Vecr]

Sadam tried to be ambiguous about having WMDs so he could used them as a deterrent without the problems with actually deploying them (kind of like Israel does, but less credible). Sadam was violating UN orders in regards to WMDs, but there was no automaticity so the US was not actually supposed to go in. I think it's plausible the UN would have gone in anyway if the US had waited.