Chinese President Xi Jinping’s yearslong purge of the top ranks of the People’s Liberation Army (PLA) culminated on Jan. 24 with the removal of his longtime top general, Zhang Youxia. Reports suggest Zhang is now being investigated for corruption and disloyalty. But his falling out with Xi may have also had to do with disagreements over military strategy. Given China’s vast military goals, any such disagreement has high stakes for the rest of the world. What is the substance of Xi’s split with