Last week’s summit in Vietnam ended with U.S. President Donald Trump walking away from negotiations with North Korean leader Kim Jong Un. With the world watching the Hanoi summit, the President sought to reach a deal for full denuclearization of the Korean peninsula. Carolee McGrath sat down with Paul Musgrave, Professor of Political Science at UMass Amherst, to find out where breakdown the Hanoi summer and the status of the relationship between the U.S. and North Korea.