Yep. We screwed over Mossadegh at the behest of the Brits, because they did some red-baiting. The Truman administration was disinterested; Eisenhower's administration was, sadly, more susceptible to such fearmongering, and established us as the major component of one of the most impactful and horrific crimes of the Cold War - the dissolution of a democracy, the installation of a brutal dictator, and, eventually, that dictator's replacement by an (ironically) anti-Western brutal theocratic regime.