A preventive war is one in which a country attacks another in order to prevent them from having the capability of making war. A preventive war is one based on the idea that it is possible to tell with certainty what future events will take place. Article 51 of the United Nations Charter recognizes “the inherent right of individual or collective self-defence if an armed attack occurs”. For example, under the Bush Doctrine the United States can attack any nation or group that may attack them in the future even if they do not currently have this capability. By calling it "preemptive" it does not change if from being preventive.