From Max Barry's blog: "In 2002, I whacked the United Nations into my game, complete with copyrighted emblem, not so much in parody as to say, “Hey, look, this is just like the real UN.” I can’t remember ever thinking about the legal consequences; I probably assumed that even if the UN noticed, they’d have plenty of blood-thirsty dictators and international war crimes to prosecute before me. But what with Saddam behind bars and all that world peace you’ve been hearing so much about, I guess they worked their way down to me."
Seriously, sending copyright cease & desist letters doesn't make UN looks smart :-/ but, as written by Barry himself, he's totally on the wrong side so let's welcome The World Assembly.
And while you're at it: why don't you join Nation States? Maybe just to say hello to my nation :)