Every American should read “The Lost Mandate of Heaven.” In 1963, South Vietnamese President Ngo Dinh Diem (1901–1963)—a devout, charitable Catholic and possibly a saint—was assassinated by US-backed soldiers, sparking a decade of hideous war. Why did this happen? Geoffrey Shaw’s “The Lost Mandate of Heaven” tells the story. In this episode, Fr. Fessio, Joseph Pearce, and Vivian Dudro give an overview of the book and discuss the foreword by Fr. James Schall, S.J.