National Politics & Government Sen. Tim Kaine On Why Mattis' Resignation Is Cause For Concern 7:51pm December 21, 2018 Politics National Security Share URL copied to clipboard! Play Pause There was an error loading the media player. Copyright 2018 NPR. To see more, visit https://www.npr.org. 300x250 Ad More All Things Considered National Remembering baseball writer Scott Miller by Scott Detrow World News Reporter's notebook: The difficulties of covering North Korea by Anthony Kuhn 300x250 Ad Support quality journalism, like the story above, with your gift right now. Donate