Weapons of mass destruction

Weapons subject to international law through global bans and non-proliferation treaties. WMD include nuclear weapons (e.g. atomic, hydrogen and neutron bombs), chemical weapons (e.g. mustard gas, VX nerve agent, sarin) and biological weapons (e.g. anthrax, smallpox, botulinum toxin). Concern must be expressed against the blurring of the boundaries of weapons of mass destruction, such as current discussion about low-impact nuclear weapons and gamma ray bombs. Similarly, future technological developments have equal potential for mass destruction, with potential impacts on tech scale of the Earth or larger (including space weapons, genetically engineered bioweapons, nanotechnology and robotics).