Cold War Mandarin: Ngo Dinh Diem and the origins of America's war in Vietnam, 1950-1963 

Seth Jacobs
"For almost a decade, the tyrannical Ngo Dinh Diem governed South Vietnam as a one-party police state while the U.S. financed his tyranny. In this new book, Seth Jacobs traces the history of American support for Diem from his first appearance in Washington as a penniless expatriate in 1950 to his murder by South Vietnamese soldiers on the outskirts of Saigon in 1963."