Lewis Amselem, who writes the always-entertaining-and-insightful blog the DiploMad, shares the likely answer:
I asked about chemical weapons. He perked up. Abbas laughed. He claimed that Iraq managed to slip those into Syria, “Right under your noses!” He roared this line, letting his nationalist sentiment overwhelm his new putative role of American vassal. Abbas insisted that the weapons had gone by plane, and, mostly, by truck. We agreed that he would come to our Embassy for further conversations.
I dutifully reported back to State my conversation with the Iraqi. Never heard anything back.
Go read the whole thing. ..bruce..