Richard Nephew, expert on sanctions and Iran’s nuclear program, joins Emily and Geoff to discuss the long history of U.S. policy towards Iran, the role of sanctions in constraining Iran’s nuclear program, and why the United States decided to proceed with military strikes on Iran’s nuclear facilities. He also explains why the next phase of Iran’s nuclear program might be the most dangerous.   Notes: Richard Nephew, The Art of Sanctions: A View from the Field Richard Nephew, “A Last Chance for Iran,” Foreign Affairs Richard Nephew, “Can Israel Destroy Iran’s Nuclear Program?” Foreign Affairs Thomas Schelling, Arms and Influence Suzanne Maloney, Political Economy of Iran Since the Revolution