Remember when in 1953 the United States orchestrated a coup in Iran to oust its democratically elected president, Mohammad Mosaddegh, replacing him with a tyrant for 25 long years? The 1979 Islamic revolution of Iran was a direct consequence of US meddling in the political affairs of Iran. It's called "blowback", or perhaps we can call it "KARMA", sowing and reaping.
The British insisted. They were paying 6 cents on the dollar in oil revenue when everyone else was paying 50 cents. Eisenhower screwed up.