Tenet declared WMD in Iraq was a slam dunk. I don't know what evidence he presented but my military source in Iraq told me the chemical weapons they found and disposed of had US nomenclature which would make sense since we were helping Iraq deal with Iran in the 80's:

"According to Iraqi documents, assistance in the development of chemical weapons was obtained from firms in many countries, including the United States, West Germany, the Netherlands, the United Kingdom, and France. A report stated that Dutch, Australian, Italian, French and both West and East German companies were involved in the export of raw materials to Iraqi chemical weapons factories.."

https://en.wikipedia.org/wiki/Iraqi_chemical_attacks_against...

End of the day the CIA operates way outside the lines on the field. Like not even inside the stadium. Tenet and his counterpart however did end up resigning for a series of screw ups which is about as far as it goes on that level.