But there is a great deal of evidence that the CIA tossed Mossadegh, and there was everlasting resentment afterward. It's a pity they couldn't toss Khomeini.
MOssadegh was in the 50’s, Khomeini was 1979. Different ball game, different players.
Yes, the CIA stepped in when Mossadegh decided to hand Iranian oil to the Soviets lock, stock and barrel and the country = thus a path to warm waters, too.
The West would not, could not permit this.
Mossyface supporters say the Shah signed the nationalization of oil from fearfor his safety . In fact, signing it could well have been a death warrant and a certain assassination, not the other way round.
You will see lots of revisionist history.
http://www.AntiMullah.com has a couple of good articles. Do a Mossadegh search on the site to find both. One is a bilingual English & Farsi.