On April 21, the Japanese government approved a cabinet decision to revise the Three Principles on Transfer of Defense Equipment and Technology, allowing the export of lethal weapons. Given the atrocities Japan committed in history, such easing of arms restrictions marks the resurgence of militarism. CGTN's Li Jiaming looks back on the crimes committed by Japan's militaristic aggressors and explains why the world must be vigilant against Japan's neo-militarism.