He did!Yes WI Saddam Hassan stays the USA's friendly despot in the middle east?
He did!
He never expected the US to get so angry about his little invasion of Kuweit!
So you have to be a bit more specific about the POD!
No invasion, or US tolerating it?
Also one large butterfly if there is no Desert Shield, Storm, or Sabre is that China would more than likely maintain its military policy of "quanity is a quality all its own" (I know its not a Chinese quote but it seems to fit the situation) instead of beginning to downsize and modernize their armed forces. The main reason they began to do so in OTL was that the Iraqis, using essentially identical equipment and doctrine, got their arses hand to them on a shining silver platter after only 100 hours of ground operations. Therefore I would conclude, that without the wakeup call Desert Storm provided the PRC would most likely maintain a much larger, and less effective, army, with few if any attempts to move away from Soviet-based doctrine and ideas, due both to intellectual stagnation inside the PLA after fifty some years of quanitative superiority being a sole tenent of PLA doctrine and lack of any dramatic external stimuli proving that the doctrine is outdated as a method of conducting third generation warfare.
Not going to effect 9/11.
Iraq never invades Kuwait, instead Saddam closes some major deals with the Americans and French to modernise the Iraqi oil industry. Iraq starts exporting oil big style. A pipeline is built from Iraq through Turkey ending in Antalya, which then becomes a major hub for oil traffic.
As a nice side effect, the Turks and Iraqis are allowed to continue their campaign against the Kurds, who are stupid enough to attack the pipeline construction sites.
This pretty much leads to the US and Europe granting Iraq and Turkey a green light to butcher the Kurds, in order to safeguard the pipeline.
By 1999, Iraq's economy has grown strong. Saddam abandons all WMD projects after signing international treaties and receiving assurements from the US, that they will safeguard him against the Iranians. Only the existing stockpile of chemical weapons is maintained.
Iran is following all these developments and decides to develop and produce WMDs as fast it can.
In 2001 evidence of this is made public by Israeli agents. Massive international pressure by all sides is made felt to Iran. However its leadership ignores it.
In 2002 a multinational force of Arab nations led by US troops invades Iran from different locations:
1. One major operation from the West through Iraqi territory with Iraqi and Saudi divisions heavily involved in the action.
2. One landing operation by Marines around the straits of Hormuz.
3. One smaller invasion with mainly light forces through Afghanistan (which by then has come under the control of US forces, following 9/11).
Irani troops deploy chemical and biological weapons as a last ditch measure and even manage to launch one missile at Israel. It hits a smaller village killing about 200 Israelis.
The Israeli leadership goes mad and nukes Tehran with 3 Jericho IRBMs.