The Hollywood actress supports Paul Jay's Daniel Ellsberg documentary ‘How to Stop a Nuclear War,’ based on the book ‘Doomsday Machine' by the Vietnam-era whistleblower who released the Pentagon Papers. BY ETAN VLESSING, https://www.hollywoodreporter.com/movies/movie-news/kristen-stewart-nuclear-catastrophe-warning-1235758067/ 15 Dec 23 Kristen Stewart is sounding the alarm over the threat of a global nuclear war by getting behind Paul Jay’s feature doc about Pentagon Papers…