Preemptive warfare is the practice of attempting to avoid an enemy's seemingly imminent attack by taking military action against them first. It is undertaken in self-defense. Preemptive war is often confused with preventive war, which is an attack launched to defeat a potential opponent and is an act of aggression. Preemptive war is thought to be justified and honorable, while preventive war violates international law. In the real world, the distinction...