By claiming a third term at the 20th Party Congress, Xi Jinping has become China’s most powerful leader since Mao Zedong. Now he will be leader until either he dies or is deposed in a power struggle. With old Party institutions melting away under his watch, Xi may be inaugurating a new period of political uncertainty that is superficially stable, but structurally fragile. Xi has restored a personalistic dictatorial regime and demolished the collective leadership and intra-party rules that D