The creation of the Office of Strategic Services (OSS) in World War II, the professionalization of American intelligence during the Cold War, and the networking of intelligence after 9/11 each ushered in a revolution in national intelligence operations. Now, the United States’ geopolitical rivalry with China and the rise of artificial intelligence have sparked a fourth revolution. In his new book, The Fourth Intelligence Revolution: The Future of Espionage and the Battle to Save America, former