In 1951 Iran nationalized the oil industry long controlled by a British company, and Britain answered with an embargo and pressure on Washington to help remove Mosaddegh. President Truman refused to back intervention and tried mediation instead, even hosting Mosaddegh in Washington. The episode shows a road not taken and sets up the series' central question.
Mediation failed because Mosaddegh rejected any deal returning the British to Iran's oil. Historians still weigh whether Truman's restraint reflected principle or circumstance, and whether Iran's democracy could have survived without the later coup.



