Mossadegh was the first in a long (and continuing) line of CIA-assisted regime change:
"DAVID BARSAMIAN: REGIME CHANGE is a new term in the lexicon. Kind of like change of address. It sounds somewhat innocuous. It certainly sounds a lot better than invasion, overthrow and occupation. The U.S. is an old hand at regime change. We’re in a year that marks a couple of anniversaries. Today is the 30th anniversary of the U.S.-backed coup in Chile. October 25 marks the 20th anniversary of the U.S. invasion of Grenada. But I’m particularly thinking of regime change in Iran. 50 years ago, in August 1953, Operation Ajax, carried out by a CIA agent who was incidentally Teddy Roosevelt’s grandson, overthrew the conservative parliamentary democracy led by Mohammed Mossadeq and restored the Shah to the Peacock Throne, where he ruled for the next 25 years.
"NOAM CHOMSKY: THE ISSUE was that the conservative nationalist parliamentary government was attempting to take over its own oil resources. These had been under the control of a British company originally called Anglo-Persian, later called Anglo-Iranian, which had entered into contracts with the rulers of Iran that were just pure extortion and robbery. The Iranians got nothing and the British were laughing all the way to the bank.
"Mossadeq had a long history as a critic of this subordination of imperial policy. Popular outbursts compelled the Shah to appoint him as prime minister, and he moved to nationalize the industry, which makes perfect sense.
"The British went completely berserk. They refused to make any compromises. They wouldn’t even come near what the American oil companies had just agreed to in Saudi Arabia. They wanted to continue just robbing the Iranians blind..."
International Socialist Review
Yep. Saudi Arabia and everyone else was paying 50% of oil revenues... Iran was getting 6%. When it was all over and the US had trained and installed the SAVAK the Brits were paying Iran 13% of oil revenues. BP is still a shitty oil company to this day