Ruth Ben-Ghiat spends a lot of time thinking about authoritarianism. An historian at New York University, she is an expert on the rise of fascism in Italy and, most recently, author of the the book, "Strongmen: Mussolini to the Present," tracing the erosion of democracy from Russia to the United States of America. She is keenly focused on what happens when those in power lose their grip on it. "The authoritarian playbook has no chapter on failure," Ben-Ghiat wrote in a November 2020 piece for The Washington Post. "Nothing prepares the ruler to see his propaganda ignored and his charismatic...