The writer of "on the Legacy of Ashes", a book about the history of the CIA.
Here is the relevant snippet:
"HH: Their great claim to success if, of course, the coup that removes Mosaddeq, the Iranian prime minister, and restores the Shah to his full authority. Do you, in retrospect, view that as a good action on their part, and a wisely calculated move?
TW: Well look, President Eisenhower authorized it. The operation was not quite as smooth as the CIA represented. It was quite a chaotic business. But in the end, a willing partner of American foreign policy, the Shah of Iran, was installed in power. And you can argue that 25 years of stability resulted. But 29 years of bitterness and instability has followed that. And the Iranian people, the people that we as Americans don’t know a lot about, are not unaware that the United States overthrew their prime minister. And that breeds resentment and fear and hostility.
Which means that Iran has a level of distrust in regards to the USA because of the overthrow of Mosaddeq ~1953.
The point everyone needs to remember is that the middle east has a very long memory of historical events.
This has to rank as another one of the US short term thinking maneuvers...
I.e. get some more stability out of the Shah's regime for a little while. While in the long term Iran will not trust USA