North Korea's state media revved up to portray Kim Jong Un's slimmer figure as a national rallying cry, prompting speculation about his health. WSJ’s Timothy Martin analyzes propaganda footage at a time when North Koreans are said to face food shortages. Photos: Korean Central News Agency/Associated Press More from the Wall Street Journal: Visit WSJ.com: http://www.wsj.com Visit the WSJ Video Center: https://wsj.com/video On Facebook: https://www.facebook.com/pg/wsj/videos/ On Twitter: https://twitter.com/WSJ On Snapchat: https://on.wsj.com/2ratjSM #WSJ #NorthKorea #KimJongUn