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Ambassador Sherman: sonic attacks in Cuba ‘gravely concerning’
Today an official delegation of top Cuban doctors and scientists are meeting with U.S. officials to try and find answers to the mysterious illnesses reported by 26 U.S. diplomats and intelligence officials in Havana over the last year and a half. MSNBC Global Affairs Contributor Ambassador Wendy Sherman, who helped re-establish diplomatic relations in Cuba, joins Andrea Mitchell to discuss.