Where is Kim Jong-un? The head of North Korea hasn't been seen in public in at least five weeks, and many are reporting that he's gone missing.
Some of the speculation has been fantastical, with suggestions that there may have been a coup. There are also reports that the young leader has eaten one too many cheeseburgers and is suffering from a bad case of gout.
National Security Correspondent David Sanger has been looking into all of this for our partner The New York Times.
