Other country's were making a LOT of money off the Oil for Food scam, including Saddam's neighbors.
Saddam's neighbors were also concerned that we wouldn't finish the job, again, and they would have to live next door to Saddam for another 30 years.
As well, the world has changed since 1991. Terrorism has gained a stranglehold on those countries that it didn't have 13 years ago.
Two shells, mustard gas, and the majority probably shipped to Syria as the satellite photography reflected.
Oh.