CBS News' John Dickerson sits down with Secretary of Defense, Gen. James Mattis at West Point to discuss the fight against ISIS, North Korea, Russia and his reflections on a lifetime of service.Subscribe to the"Face the Nation" Channel HERE: http://bit.ly/1SUQc68Watch Full Episodes of "Face the Nation" HERE: http://cbsn.ws/20pbkSFFollow "Face the Nation" on Instagram HERE: http://bit.ly/23Xuhk4Like "Face the Nation" on Facebook HERE: http://on.fb.me/23Xmz9EFollow "Face the Nation" on Twitter HERE: http://bit.ly/1o3QDQoFollow "Face the Nation" on Google+ HERE: http://bit.ly/23XuaoGGet the latest news and best in original reporting from CBS News delivered to your inbox. Subscribe to newsletters HERE: http://cbsn.ws/1RqHw7TGet your news on the go! Download CBS News mobile apps HERE: http://cbsn.ws/1Xb1WC8Get new episodes of shows you love across devices the next day, stream local news live, and watch full seasons of CBS fan favorites anytime, anywhere with CBS All Access. Try it free! http://bit.ly/1OQA29B---"Face the Nation" is the number one Sunday morning public affairs program. The broadcast is one of the longest-running news programs in the history of television, having premiered on CBS on Nov. 7, 1954. John Dickerson is the host of "Face the Nation". He also serves as Political Director for CBS News and is a contributor to Slate magazine and its podcast The Political Gabfest. Guests include government leaders, politicians, and international figures in the news. "Face the Nation" airs Sunday mornings. Check local listings for "Face the Nation" broadcast times.