Utter nonsense. We knew about WMD in Iraq as far back as 1993, I think, when the IAEA began on-the-ground inspection of Iraqi weapons. The 2003 invasion and since found much of what we knew about, and more besides.
The proof is in the pudding and it wasn’t there that’s why the stories were spread by 2005 or 2006 about Sadaam moving WMD to Syria.
Public opinion was being set up for the “Arab Spring” of 2011 when Hillary and McCain’s Al-Qaeda follower friends would be unleashed on Assad in Syria.