On this "Face the Nation with Margaret Brennan" broadcast, U.S. Trade Representative Jamieson Greer and CMS administrator Dr. Mehmet Oz join Margaret Brennan.

North Korea’s glitzy new beach resort is closed to foreigners, except Russians. WSJ’s Tim Martin explains. Photo: Daria Zubkova; Kyodonews/Zuma Press Video from around the world on the latest news ...