The 1979 Islamic Revolution triggered a cold war between Iran and the United States—former fast friends. Despite the US's relentless efforts at containment, Iran has risen as a formidable power in Iraq, Syria, Lebanon, Yemen, and Gaza. Its newfound status not only frustrates the US but has swiftly become a thorn in the side of Israel and Saudi Arabia. How did Iran rise so rapidly? And as it faces ever increasing pressure at home and abroad, can it hold onto its power? Mohsen Milani guides us through the twists and turns of the Iran–US rivalry in the battlefields of the Middle East. Going from the fall of the Shah to revolutionary Iran's alliances with Syria, Hamas, Hezbollah, Iraqi militias, and the Houthis in the Axis of Resistance, Milani lifts the veil on Iran's foreign policy strategy and its implications for the region, the US, and Iran itself.