chemical warfare

Chemical weapons are toxic agents used to kill, injure, or incapacitate humans, animals, or plants. They can be delivered through various means, including artillery shells, bombs, and missile warheads, and inflict damage through inhalation, skin absorption, or ingestion.12

The use of chemical weapons dates back to antiquity, with early examples including poisoned water supplies and the use of burning sulfur and pitch. Modern chemical warfare saw significant escalation during World War I, with the introduction of choking, blister, blood, and irritant agents. World War II saw the development of nerve agents like sarin, and the Cold War introduced more persistent agents such as VX.342

Chemical weapons are categorized by their properties, including lethality, persistence, and mode of action. Some agents, like nerve agents, can kill almost instantly, while others, like tear gas, are primarily irritants. Persistent agents can remain lethal for days or weeks, making them useful for denying enemy access to areas.1

Incapacitants, designed to disorient or paralyze, are also a category of chemical weapons, though they can cause permanent injury or death in high doses.5

The international community has worked to ban chemical weapons, leading to the Chemical Weapons Convention (CWC) in 1993. This treaty prohibits the development, production, acquisition, stockpiling, or transfer of chemical weapons, with the goal of complete disarmament. Despite the CWC, some states and non-state actors continue to pursue or possess chemical weapons, necessitating ongoing efforts for compliance and defense. Defenses include gas masks, protective clothing, and decontamination procedures.627