Sounds like you didn't bother reading the link that I posted and the sources within the link.
Funnily enough, I did. (although not all the links) It doesn't change my thoughts that the premise is nonsensical. (Not the flight to Belarus, or anywhere else for that matter), but that the Iraqi leadership could have had anything of value in the form of knowledge of weapons of mass destruction.
We know now that Iraq did not have weapons of mass destruction in 2002 and we know that Rumsfeld and his friends also knew that. They certainly had no indigenous technology. The know-how, the equipment, the delivery systems and the raw materials for Iraqi chemical and biological weapons was supplied by the US, Germany, Britain, Italy, France, Austria and others under the benign gaze of---guess who? That same Donald Rumsfeld.
As for the nuclear programme, it virtually died when the Israelis bombed the Osirik reactor in 1981 although they did carry on some research into nuclear technology generally, but it was all "bought-in". What could they sell "Oh!, Here's a list of who supplies calutrons"?
It is interesting to note that most of Iraq's nuclear research and uclear weapon related equipment was supplied from countries that are not actual Nuclear weapons states, but could be in a few months if they wanted to be so, like Brazil, Austria, Italy.