When and why did the United States policy of containment of Iran come about? How did it evolve? Where is it going?Much has been said about the US policy of dual containment, particularly as it pertains to Iraq. However, there has been little in-depth analysis of this policy when it comes to Iran. Sasan Fayazmanesh explores this often neglected subject by analyzing the history of this policy. The analysis includes the role that the Carter and Reagan Administrations played in the Iran-Iraq war, the numerous sanctions imposed on Iran by the Clinton Administration and the aggressive and confrontational policy toward Iran adopted by the George W. Bush Administration after the events of September 11, 2001.This topical read synthesises a range of primary sources, including firsthand reports, newspaper articles and electronic media, and presents a coherent analysis of the ebbs and flows in the US thinking on Iran and Iraq.