In 1953, the CIA baited the Iranian coup d'état by covertly supporting pro-shaw groups. The shaw was then overthrown in 1979, bringing Khomeini to power as the Supreme Leader. Our role in the later Iranian revolution isn't as clear, yet. After that the 2009 Persian Awakening was additionally supported by the states.
https://fas.org/sgp/crs/nuke/RS21592.pdf
The US puppet planning to start building 23 nuclear power plants in the 70s were based on US support to create a US friendly power-base in the middle east.
https://www.nytimes.com/2018/05/01/opinion/tehran-nuclear-sa...
...It's really worrying to me that the New Left seems to embrace nationalism and American exceptionalism just like the right. It means nobody is pushing back against creating wars. A lot of people will die for it unless people wise up.
It's not anyone's goal to overthrow Iran. No one want to clean up the mess. There are already enough messes in that region already (afghanistan, iraq, syria, yemen).