I’m curious about GP’s reply. The nuance about the British wanting a PM they’d be able to sway is a piece I hadn’t heard before. Oil/nationalization of the Anglo Iranian Oil Company still seems like a key flashpoint in UK/US opposition regardless of what they considered doing instead.

I just read the Wikipedia link in the parent of this thread and it covers it in very interesting detail. Lots of moving parts, and I can’t give a synthesis. But this includes: nationalization of the oil fields that broke prior agreements with Britain (big money maker for Britain, but a bad deal for Iran), gradual move towards authoritarian leadership by Mosaddegh as his popularity waned due to economic hardship after a British oil embargo following the nationalization, Mosaddegh alignment with communists. Seems like there was both western meddling and also inherent power struggle happening in the country at that time. USA supported shah but who they should support was actually under debate. It states the USA coup attempt actually failed but may have precipitated the successful one, which was possibly natural. Finally, USA broke the British monopoly after the coup and Iran did get much more money from their oil after this.

please correct if I got anything wrong here.

This is a decent article that covers U.S. involvement:

https://web.archive.org/web/20150820164417/https://www.forei...

Basically, when the U.S. saw opposition to Mossadegh growing they tried to organize and fund the opposition forces against him, while also lobbying the Shah to have him dismissed. The Shah was reluctant at first, but finally agreed as Mossadegh's efforts to gain political control progressed. The strategy the CIA envisioned failed, however (Mossadegh refused to step down when the Shah dismissed him and began arresting opposition). At this point the United States thought that Mossadegh would remain in power, but opposition groups inside Iran reorganized and removed Mossadegh.