[antoko]

I think you're confused about Iranian history and US-Iranian relations.

I'm certainly no expert on the matter, but in broad strokes...

The US supported(propped up) that "free" regime of the Shah prior to 1979. They did that for cozy relations and cheap oil. That regime was actually quite brutal in its repression of dissidents (islamists mostly) and while it might look all pretty and western and "more like us" it was a brutal police state not unlike Egypt under Mubarak - which was also supported by the US.

There was a islamist revolution that took over the country in 1979 which ushered in the current situation - I'm sure the people that supported it then didn't envision it turning out the way it did but the whole thing is much more nuanced than black and white you seem to assume. And it wasn't the west trying to get oil that caused the 1979 revolution, it was a reaction AGAINST that western influence that caused the revolution.