'A new direction’: Why Zohran Mamdani backs candidates challenging Democratic incumbents

Mayor Mamdani explains his endorsements of challengers in the New York Democratic primaries Tuesday. Plus Vance unveils a new path to end the war in Iran that looks a lot like something that already existed. And Ta-Nehisi Coates on post-Civil War Reconstruction era and how it got us to today. Mayor Zohran Mamdani, David Rohde, Chris O’Leary, Ta-Nehisi Coates all join Ai Velshi on The 11th Hour.