Deciphering Trump's Signals Toward Iran

Last week, President Donald Trump signed a directive "restoring maximum pressure" on Iran while signaling he's open to reaching a new deal with Tehran. Vali Nasr and Elliot Abram are two former state department officials who have served Democrat and Republican Presidents, and they join Christiane to discuss this issue. 

Also on today's show: actor Fernanda Torres and director Walter Salles discuss the Oscar-nominated Brazilian film "I'm Still Here"; physician and contributing writer for The New Yorker Dhruv Khullar talks about the dangers of ultra-processed food in our diets. 

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