Iran is on notice as one of the U.S. military's largest aircraft carriers arrives in the Middle East after thousands of protesters were killed in a brutal crackdown. How vulnerable is the regime? And what are President Trump's options if he chooses to enforce his red line? Compass Points moderator Nick Schifrin discusses that with Firas Maksad, Vali Nasr, Behnam Ben Taleblu and Robin Wright. PBS News is supported by - https://www.pbs.org/newshour/about/funders. Hosted on Acast. See acast.com/privacy