Don't you mean Emperor who was there since 1941? In a country that had 2500 years of being run by a Monarchy? Who was backed by the US to maintain oil exports.
Then came a bunch of religious wack jobs to overthrow 2500 years of Monarchy and install basically their own form of Religious Monarchy. These wackjobs, like many wackjobs before them who tried armed and bloody revolution, just wanted to set themselves up in power.
Not to mention the fact that it was the he who gave suffrage to women, which really pissed off the Islamic Clergy of the revolutionaries.
Nope. Oil is pretty much the root cause. If it wasn't for oil in the Middle East, aside from Jews in New York and other places, most Americans would be more than happen to have let the countries of the Middle East throw stones at each other (because without oil, they wouldn't have had money to do much else, aside from Religious Tourism) and would have remained for the most part, back in the 12th Century. If those oil reserves had been found in another part of the world, the Middle East would never have entered the world stage in the 20th Century.