Edited sentence: Opponents of this strategy note that the United States is the country that possesses one of the greatest arsenals of WMD on earth, and the only country that has ever used nuclear weapons in its attacks (at Hiroshima and Nagasaki), whereas others argue that the strategy is aimed solely at those whose intentions may be dangerous and that the current nuclear powers have all shown an unwillingness to use their WMD outside extreme circumstances, whereas the US has no similar guarantees with nations like North Korea.Weapons of mass destruction are used to justify the Bush Doctrine of pre-emptive strikes against "rogue states" thought to be in danger of possessing or developing them