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H.R. McMaster: A nuclear North Korea is ‘a grave danger to the world’

Joining TODAY live, H.R. McMaster, President Trump’s current national security adviser, says that President Trump’s position on the Iran nuclear deal is part of a broader Iran strategy. He also warns that a nuclear-armed North Korea would be “a grave danger to the world.” He says he has not been contacted by special counsel Robert Mueller regarding the Russia investigation.

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