And peace and tranquility? Iran was in economic chaos before the PM was dismissed in 1953. They were printing money to pay salaries because the British refused to transport their oil, cutting off their main source of income.
>the clash between the kingdoms of Aksum and Himyar in 525 displayed a higher power struggle between Byzantium and Persia for control of the Red Sea trade. Territorial wars soon became common...
etc. And on likewise for over a thousand years.
Iran wasn't in era of peace and tranquility 75 years ago.
The PM was not popular in 1953 after his promise of prosperity after seizing British oil fields not only failed to materialize, but instead led to the oil industry grinding to a halt; his failed half-hearted land reforms pissed off pretty much everyone; he jailed his political enemies; and was ruling Iran as a dictator.
It's unfortunate that Iran's propaganda around Mossadegh has been so effective at rewriting history, but people just like simplistic stories about good vs. evil.