Quite simply, no. I like Your premise, but forcing everyone under one roof so as to speak does nothing to fix the problem.
The problem of war stems from many different factors: fear, greed, retaliation, or revenge , , , , er, that's all I have right now, it's late, and my thoughts escape me. I don't really know what to do about greed, but I don't think everyone shares that. Revenge??? Well, I don't think that usually entails an entire nation. I think it boils down to fear.
Fear is the real enemy, and it is born from not knowing, or a lack of understanding something different. It is the prime motivator used by very powerful People to incite rage, and anger into a group of People. Enough to cause a war on their behalf; which is either due to greed, or revenge.
The real deal Person wouldn't need to hide behind an army built at it's core from fear, but would face the challenge on their own.
I don't think a better World order could exist under a One World order because We are simply different; each, and everyone of us. Now, to embrace each other's differences, societies, and cultural differences, well We certainly could build a diverse, and truly just World order built from many nations that embrace the differences.
Remember mundane looses appeal, it is variety that sets the stage for entertaining, and appeal.
S&F
