North Korea Expert Karl Friedhoff: “They’re very good at knowing where the line is, and stepping over it”

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President Donald Trump talks about North Korea during a briefing on the opioid crisis, Tuesday, Aug. 8, 2017, at Trump National Golf Club in Bedminster, N.J. (AP Photo/Evan Vucci)

Chicago Council on Global Affairs North Korea Expert Karl Friedhoff tells John how dangerous President Trump’s retweeting of a “Fox and Friends” post is. He then shares how he thinks the United States can find a resolution on North Korea.