The UN is almost becoming a failed institution, it has become a center of nations primarily focused on self-interests and in search for absolute gains. According to some Liberals, institutions like the UN fail because nations cheat and lie. Unfortunatey they are incorrect. According to Neo-Liberals, the UN is still important not because of their abilities to handle certain problems, but it is essential that the UN remain as a focal point for multi-national diplomacy. Any actions or exclusive deals bi-laterally can be troublesome and cause problems.
Remember that the Perm 5 are all nuclear armed nations. For Japan or Germany to be a big player in International security, it must obtain nuclear weapons. Neo-realists like Kenneth Waltz endourses the idea that Nuclear Deterrence will stablize possible conflict between states.
The only problem if either Germany or Japan obtain nuclear weapons, it would create shock waves across the world, entering the 21st Century of Nuclear Weapon Proliferation and possibly a multipolar arms race. Of course no one will dare to use such weapon because fear of retaliation and the opponent's second strike capabilities. NATO signed the No First Use policy during the Cold War. But certainly this will generate fear among the general population that the world has become less safe.
I agree... prolly more like England and Germany.
You are correct in some aspects.
During the late 19th Century, England was able to produce a powerful navy quite similar to Japan's Maritime SDF Navy in terms of their capabilities and their modernity. While Germany was about to produce the most powerful Army in the region under a doctrine brilliantly devised by Von Moltke...quite similar to the most powerful Army in East Asia which is China.
The PLA of China does not field the most advanced weapons to date, however the Prussian Army was able to achieve victory despite their technological inferiority during the Franco-Prussian War.