Iraq fired 39 SCUD missiles at Israel in 1991. Had any of those been armed with other than HE, WWIII would have begun within an hour.....
There is no doubt in my mind that F15(E) aircraft - loaded with nukes at Sedot Mikha airfield - were sitting in underground hard stands waiting for the go code. Had they been released, not only Baghdad would have been glowing ruin, I suspect that Damascus and Tehran would have been next.
Given that Iran shared a common border with the, then still active, USSR - and a nuclear Pakistan - could have driven a exchange of Nweapons that may have led to a larger conflict.
I will never forget scanning every TV news station I could while those were in the air thinking where I would go to protect my family if the Scuds carried anything but high explosives.