Communism, or as Ken Jowitt prefers, Leninism, has attracted, repelled, mystified, and terrified millions for nearly a century. In his brilliant, timely, and controversial study, New World Disorder, Jowitt identifies and interprets the extraordinary character of Leninist regimes, their political corruption, extinction, and highly unsettling legacy.

Earlier attempts to grasp the essence of Leninism have treated the Soviet experience as either a variant of or alien to Western history, an approach that robs Leninism of much of its intriguing novelty. Jowitt instead takes a...