Ike was worried about Russian influence in the region to be sure, but Russia certainly didn’t need the oil. And while the CIA gets credit for the overthrow, it was really an MI6 led plan but the British needed cover given their interests in Iran. And that interest can be spelled in one word, oil. When Mossadegh had the temerity to nationalize that industry in Iran, BP and the Brits couldn’t let it stand, he was ousted, the Shah installed, and Khomeini and other clerics considered to be radical, were banished.
The chain of events since BP first discovered oil in Persia in the early 1900s is fascninating. If there is one commonality worldwide since, it’s that any country leader that attempts to nationalize that industry will be dealt with harshly. History bears that out. Big oil has been in bed with some of the most ruthless regimes and dictators throughout and as long as those leaders played ball, things were cool. Rock that boat and bad things happened.