coup to overthrow a democratically elected government in Iran.
I guess now is a good time to read up about it. I even included a source straight from the horses mouth if you want to read the official perpretrator's version of it.
https://www.britannica.com/event/1953-coup-in-Iran
https://www.cia.gov/readingroom/docs/the%20central%20intelligence%20%5B15369853%5D.pdf