https://en.wikipedia.org/wiki/1953_Iranian_coup_d%27%C3%A9tat#:~:text=The%201953%20Iranian%20coup%20d,Mohammad%20Reza%20Pahlavi%2C%20on%2019
The above-mentioned coup led to the enmity Iran has for the US (along with other actions)
Since World War II, the US increasingly built its economic system around oil and has acted consistently and at times nefariously to secure a middle east oil supply.