Kuwait - The Kuwaiti's were using horizontal drilling techniques to tap into Iraqi oil fields, stealing Iraqi oil, and the Iraqi's knew it. Add that into a broke Iraqi national treasury, and the opinion that Kuwait was the 19th province of Iraq, and you have a takeover waiting to happen.
Marsh Arabs and Kurds were always trod upon. The Turks still look down upon their own Kurdish population and regularly pursue them into northern Iraq.
Coalition Aircraft? - What would happen if foreign combat aircraft were flying in US airspace? Hello....self-defense.
Women, children - Yep, wimminz and chill'un's most affected. I'm surprised that you didn't mention tribal animosities.