In this rich, fascinating history, John Ghazvinian traces the complex story of the relations of these two powers back to the Persian Empire of the eighteenth century--the subject of great admiration of Thomas Jefferson and John Quincy Adams--and an America seen by Iranians as an ideal to emulate for their own government.Drawing on years of archival research both in the US and Iran--including access to Iranian government archives rarely available to western scholars--the Iranian-born, Oxford-educated historian leads us through the four seasons of US-Iran relations: the 'spring' of mutual fascination; the 'summer' of early interactions; the 'autumn' of close strategic ties; and the long, dark 'winter' of mutual hatred.Ghazvinian, with grasp and a storyteller's ability, makes clear where, how, and when it all went wrong. And shows why two countries that once had such heartfelt admiration for each other became such committed enemies; showing us, as well, how it didn't have to turn out this way.