So emerging powers are not constrained by this treaty. The one power that is constrained is in violation. Thus the only other remaining power is withdrawing. Seems like a sensible response since it would leave America vulnerable to potential strikes from a treaty that no longer matter. I think people need to consider what being a national citizen means Vice global citizenship since great powers do not recognize those equities and will profit from it while maneuvering to a more powerful position while trying to constrain America to a lesser position and one of weakness. Common sense folks.