Trump Responds To North Korea Missile Test

The latest missile test by North Korea is another challenge for the Trump administration. The president responded to the launch on Twitter. North Korea expert Laura Rosenberger says U.S. intentions aren't clear to either adversaries or allies.Rosenberger, who served in the State Department under Bush and the National Security Council under Obama, talks to NPR's Kelly McEvers about the test and the president's reaction. Copyright 2017 NPR. To see more, visit http://www.npr.org/.