 Iran actually used to be our closest ally in the region. Then in 1953, the Iranian people elected a leader, Mohamed Mosadday, who was not friendly towards the U.S. in return, the U.S. and Britain helped to spearhead a coup in Iran that brought the last Shah of Iran, Mohamed Reza Shah, to power. This is the man that was eventually overthrown in the 1979 Iranian Revolution. He was incredibly cruel to his people. His secret police were repressive and brutal. And so the Iranian Revolution was, in many ways, a reaction to the U.S. instigated regime change from years before. So this is the background to the animosity between the U.S. and Iran.