TV screenwriter Moshe Zonder is a master of tension and emotion, like when he forces a Mossad operative played by Glenn Close into split-second decisions in the latest season of “Tehran,” or pushes commando Doron Kavillio (Lior Raz) to choose between family and work in the first season of “Fauda.” But this veteran Israeli screenwriter who started out as an investigative journalist says that when he creates his characters’ backstories, he often channels his mother, a Holocaust survivor who not only lived but flourished. “When I think about what she went through, her survival and her soul, it enters the...