Iran did not give him back his airplanes after the Gulf war was over.
I know...my point was he had just finished a war with them, yet he still preferred to send the planes there rather than have them destroyed on the ground in Iraq. That tells me that if he thinks destruction is imminent, he would be more likely to send his material to a local “enemy” like Syria rather than risk it falling to the Americans, just like he did with sending his planes to Iran.
Plus, Syria has a chemical weapons program too. Has it changed since 2003, which would indicate that they recieved new material?