The apparent use of chemical weapons by the Iran-backed government of Syria has injected a dramatic new twist in the unfolding story of the U.S. relationship with Iran and Washington's impending decision on whether to remain a party to the Iran nuclear deal, the Joint Comprehensive Plan of Action. Two former high-level U.S. officials, ambassadors James Jeffrey and Dennis Ross, and veteran Iran watcher Jay Solomon discuss the high-stakes risks confronting the Trump administration as it deliberates on the continued U.S. role in Syria and the future of the JCPOA. The panel was moderated by Washington Post foreign affairs reporter Karen DeYoung.