Tabun is a highly toxic nerve agent that was developed in the 1930s as a pesticide. It is classified as a chemical weapon and works by inhibiting the enzyme acetylcholinesterase, leading to a buildup of acetylcholine in the body. This can cause severe respiratory failure and death if exposure occurs. Tabun is part of a group of chemicals known as nerve agents, which also includes Sarin and VX. Due to its lethality, the use of Tabun is prohibited under the Chemical Weapons Convention. It poses significant risks in warfare and terrorism, making its control and elimination a global priority.