After 35 years of estrangement and hostility, U.S. and Iranian officials re-engaged in direct diplomacy, and Iran and the P5+1 powers (the United Nations’ five permanent members plus Germany) reached a historic deal on the status and future of Iran’s nuclear program. In 2018, the United States strayed from the other P5+1 powers to announce that it would no longer honor the Iran nuclear deal, creating great uncertainty about sanctions and the future of Iran’s nuclear program. ASPI’s Iran work focuses on sharing insights on the evolving U.S.-Iran bilateral relationship through public events and expert commentary.