Stopping the spread of nuclear weapons would seem a more promising issue for global collaboration. The Nuclear Non-Proliferation Treaty (NPT) limits the right to possess nuclear weapons to the Security Council’s five permanent members, and then only temporarily.
停止核武器蔓延似乎是前途相当光明的全球合作问题。核不扩散条约（NPT）限定拥有核武器的权利仅限于安理会五大常任理事国，而且只能暂时拥有。