We might have been here before (as it seems with any good WI) - but here goes.
Iraq (Saddam) feared Iran, especially after the Iranian revolution. The threat was that Iran might have exported its success to the Shi'a majority, which would have caused untold misery for Saddam.
Iran was also aiming at Saddam, calling him a 'non-Muslim, etc. so it might have been a matter of time before something would have happened.
According to wiki, the Iraq war aims were: "Iraq's primary rationale for the invasion was to cripple Iran and prevent Ruhollah Khomeini from exporting the 1979 Iranian Revolution movement to Shia-majority Iraq and internally exploit religious tensions that would threaten the Sunni-dominated Ba'athist leadership. Iraq also wished to replace Iran as the dominant state in the Persian Gulf"
We also need to remember that Iraq is Arabic whereas Iran is not. Saddam hoped to also get the Arabic countries on his side - especially as they all feared Iran and its revolution.
So, What If: Iraq is winning the war, crippling Iran and getting control of the Shat-Al-Arab waterway and the border regions in dispute?
Crippling meaning that the Iranian army and air force gets severely depleted.
What now? Will Saddam win friends in the West? will Saudi be fine?
What else can happen? We also need to remember that USSR was involved in Afghanistan.
Iraq (Saddam) feared Iran, especially after the Iranian revolution. The threat was that Iran might have exported its success to the Shi'a majority, which would have caused untold misery for Saddam.
Iran was also aiming at Saddam, calling him a 'non-Muslim, etc. so it might have been a matter of time before something would have happened.
According to wiki, the Iraq war aims were: "Iraq's primary rationale for the invasion was to cripple Iran and prevent Ruhollah Khomeini from exporting the 1979 Iranian Revolution movement to Shia-majority Iraq and internally exploit religious tensions that would threaten the Sunni-dominated Ba'athist leadership. Iraq also wished to replace Iran as the dominant state in the Persian Gulf"
We also need to remember that Iraq is Arabic whereas Iran is not. Saddam hoped to also get the Arabic countries on his side - especially as they all feared Iran and its revolution.
So, What If: Iraq is winning the war, crippling Iran and getting control of the Shat-Al-Arab waterway and the border regions in dispute?
Crippling meaning that the Iranian army and air force gets severely depleted.
What now? Will Saddam win friends in the West? will Saudi be fine?
What else can happen? We also need to remember that USSR was involved in Afghanistan.