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Power calls out Trump for not telling truth, warns U.S.-China trade war 'mutually assured destruction'

Former United States Ambassador to the United Nations, Samantha Power sat down with Yahoo Finance's Editor-in-Chief Andy Serwer to discuss a range of topics, including that US-China trade war is 'mutually assured destruction,' President Donald Trump threatens U.S. leadership when he 'just makes things up,' and that she is worried about' Chinese military intervention in Hong Kong.