So far, only Slaman Pak has a jet fuselage where terrorists were trained in taking over a modern jet with nothing more sophisticated than box cutters. Our sat intel is good enough to have found any other sitting on a false runway or even a side runway is Syria, or Iran, or N.Korea, etc. So far, only Slaman Pak has been found to have a jet sitting in a training area for terrorists. So yes, I too believe wholeheartedly that Saddam ran the terrorists through training in Iraq ... or it may have been one of his psychopath sons, but it was likely in Iraq that the murderous jihadis were trained.
Saddam had means, motive, and opportunity. It's more than enough for me to continue to harbor suspicion that he had a hand in it one way or the other.