When the Nationalists routed a ragtag Red Army on the Xiang River during the Long March, an earthy Chinese peasant with a brilliant mind moved to a position of power. Eight years after his military success, Mao Tse-tung had won out over more sophisticated rivals to become party chairman, his title for life. Isolated by his eminence, he lived like a feudal emperor for much of his reign after blood purge and agricultural failures took more lives than those killed by either Stalin or Hitler. His virtual quarantine resulted in an ideological/political divide and a devastating reign of terror that became known as the Cultural Revolution. One cannot understand today's China without first understanding Mao, and Philip Short's masterly assessment -- informed by a wealth of new sources -- allows the reader to understand this colossal figure whose shadow will dominate the twenty-first century.