Who is the anonymous online poster claiming to be a high-level administration official? And can he or she bring us some much-needed truth in an era of fake news?I’ve been a writer and producer of television and movies working in Hollywood for over 30 years. One of my recent jobs was on the TV series Homeland, where I was involved in creating the season just concluded. The season was about information warfare. It’s a little-discussed subject, and it took a lot of research to find out exactly what this protean form of conflict is all about. The past season of...