Primarily, it may seem ridiculous that kinds of weapons that havebeen around since World War I and not designed to kill could be anevolving ethical or policy dilemma - considering the recent developmentand production of non-lethal weapons such as laser missiles, blindingweapons, pain rays, sonic weapons, electric weapons, heat rays, disablingmalodor ants, as well as the use of gases and sprays in both the military and domestic police forces. These weapons may not kill, but they can cause severepain, physical injuries, and long-term health costs (the latter has notbeen thoroughly investigated).