This glosses over the historical context of the Iranian revolution. Iran's leftist, democratically-elected prime minister (who nationalized the oil fields in 1951 that were originally taken by British Petroleum) was overthrown for a West-backed dictatorship in Iran in 1953 that lead to the mass killings of leftists and pro-democracy advocates. The 1979 revolution led to the restoration of elections.

Good writeup here: https://www.npr.org/2019/01/31/690363402/how-the-cia-overthr...