Japan's constitution should be amended to permit it to keep and maintain its own normal military presence. Japan was far from the only country to commit atrocities in World War Two, and the atrocities Japan committed pale by comparison to those committed by Russia and Germany, each of which have their own military today.
World War II ended nearly 70 years ago, so it's time to move past Japan's aggressor past and allow the nation to actively defend itself against its huge neighbor, China. The Chinese government can be hostile towards regional interlopers, such as the small islands in dispute between China and Japan. The Japanese should have a right to develop an active military and not just a defense force. The military can protect Japanese interests around the world just as much as any other military has the right to do so.