August 9—the anniversary of the Nagasaki bombing, which preceded Japan's WW II surrender and its postwar commitment to peace. Yet Japan is now pressing ahead with full-scale remilitarization, from spy agencies to military-themed pop culture, testing the very postwar order it once helped uphold. On this day, when Japan's government needs to reflect more deeply on its pacifist roots, what risks lie ahead for regional and global security? Our reporter Zhou Jiaxin has the story.