YouTube videos posted by the father of the Orlando shooter over the last several years show him devolving from amateur pundit on Afghan politics to a man who appears to be suffering from delusions of grandeur. A naturalized American who came to the U.S. from Afghanistan in 1986, Siddique Mateen has a Facebook following of more than 10,000 and has been airing an amateur interview show on YouTube called the “Durand Jirga Show.” He told TIME that he is founder and CEO of an organization called “Durand Jirga,” a religious nonprofit devoted to resolving the dispute over Afghanistan’s border with...