The guy who supposedly outed curveball as “unreliable” was Tyler Drumheller, a partner of Hillary’s personal intel supplier, Sid Blumenthal. Tyler was fed his info on Curveball by the Germans, who at the time were busting Iraq sanctions.
Tyler later fed info on Libya he obtained from ? to Sid Blumenthal, who passed Tyler’s reports to Hillary Clinton via her non-gov email. That Libyan intel, prior to Benghazi, must have been some high quality stuff./s
The big problem with the Curveball situation was that a massive conclusion was drawn essentially from the hearsay claims of a single source. This speaks of an intent to produce a particular on-paper outcome whether or not it was at variance with reality, and not of a search for valid intelligence.