How do you solve a problem like Korea?

Donald Trump and Kim Jong-un made history today. Or did they? NPR’s Elise Hu was there. She explains what happened and what didn’t. Plus, The New Yorker’s Robin Wright recounts United States summit history. She says there are two keys to a successful summit, and Singapore's meeting lacked both. Learn more about your ad choices. Visit podcastchoices.com/adchoices