Well this is getting like a real debate on the UN... . Not but i'm China and i've more people wich means more army, so surrend US and hand over all nuclear arsenal, bla, bla, bla... If i remember correctly USA and Russia agreed to end with the armamentist career right after the Cold War, of course it was just a fantasy, demagogy of powerful countries that still keep the sentence "If you want peace, prepare for war"... I don't even know if a member of the UN has ever believed that they will actually give up.
I think i remember the words of Truman after Hiroshima: "...we should be the guardians of this technology (or something like that)." Man that's arrogant...