Headquarters of OPCW in The Hague, July 2019, overseeing Chemical Weapons Convention implementation.

In July 2023, the OPCW confirmed the verified destruction of all declared chemical weapons stockpiles, marking a historic milestone for the Chemical Weapons Convention (CWC). As the most universal disarmament treaty, the CWC has outlawed the development and possession of chemical weapons since 1997. This achievement advances the OPCW’s mission to eliminate chemical weapons and offers renewed hope for global arms control efforts.