Have you noticed anyone saying that, BTW? Can you point to some military guy who's stepped forward to say that the idea that shipments of WMD went to Syria is hogwash, because he knows that they were really XYZ?
This is a lesser point but your "motive" is also predicated on the notion that this guy favors Bush to win the election. Although that could be true, I do not see support for it in the article.
There was plenty of information published about caravans leaving Iraq for Syria immediately before and during the invasion. Taken on its face, this is rather unremarkable. The Russian envoy left in one such caravan that was fired upon (by mistake one hopes) by US forces. Whether or there were WMDs in any of those caravans remains speculation unless one has an intelligence source that had access to the contents.
Presumably the ex-CENTCOM No. 2 has access to such sources, or intelligence derived from such sources, at least to a greater extent than you or I do. This makes it reasonable to provisionally accept that what he's saying is correct, unless you have some actual reason to doubt it?
Like you say, the fact that convoys left Iraq for Syria is unremarkable. The idea that they could have contained banned items is ALSO unremarkable. Why do you find it so difficult to accept?
Now, let us consider his sources as to the contents of those caravans. We don't know what his source say because he didn't say. Could it be that his sources are classified? If so, the observations and conclusions are also classified, until and unless official statement is released.
It could be that his sources are classified, I suppose, but there is no support for this in the article. Why on earth would you make that assumption and springboard from it?
I do not want to accuse the General of the unauthorized release of classified information
Instead you have accused him of lying, inventing a story out of whole cloth which bears on geopolitics and national defense. (Which is worse.)
What is left as the best explanation is that he was speculating.
For this you have to ignore his actual words, "I do know for a fact that some of those weapons went into Syria, Lebanon and Iran". Rather, you have you decide that he is lying there. Once again, do you have an actual reason to suspect this man of lying?
I'd be more than hesitant to call speculation 'knowing for a fact' but I'm pretty conservative about that sort of thing.
You're the one who's decided, based on no evidence whatsoever, that his statement is speculation.
This makes you the one who's speculating, not he.
Why is the content of his claim so difficult to believe? Things have gotten so bass-ackwards that there are people who actually find it difficult to believe that... Saddam Hussein's government manufactured banned objects and moved them. *bizarre*