What’s next after historic North and South Korea summit?

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Kim Jong Un and Moon Jae-In signed a historic declaration on Friday pledging "no more war" and a common goal of the "complete denuclearization" of the Korean Peninsula. Former U.S. Ambassador to South Korea Chris Hill, Former Director of Asian Affairs in President George W. Bush's National Security Council Victor Cha, and Former Chief Of Staff at the CIA and the Pentagon Jeremy Bash react to the meeting.