Amanpour: David Petraeus, José Andrés and Suketu Mehta

Former Commanding General of the Multi-National Force in Iraq David Petraeus joins Christiane Amanpour to discuss the escalating tensions between Iran and the United States. Then, Michelin Star Chef José Andrés explains why Americans need to eat more vegetables to help stop climate change. Finally, Suketu Mehta tells our Hari Sreenivasan about why the U.S. needs more immigration.

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