THE 'BEST' DICTATOR By JOHN O'SULLIVAN December 12, 2006 -- GEN. Augusto Pinochet, who died Sunday, was the most successful dictator of the 20th century - yet also one of the most vilified. Dictators are supposedly judged by two tests. How many people did they kill? And did they bring prosperity to their people? These two tests hang together because Marxists believed that their various ideological despotisms (in Cuba, China, the USSR) would eventually midwife a utopia - justifying their mass murders retrospectively. So how did individual dictators fare? Josef Stalin, Adolf Hitler and Mao Zedong each murdered tens of...