Solution:

The Organisation for the Prohibition of Chemical Weapons is an intergovernmental organization and the implementing body for the Chemical Weapons Convention, which entered into force on 29 April 1997. The OPCW, with its 192 member states, has its seat in The Hague, Netherlands, and oversees the global endeavor for the permanent and verifiable elimination of chemical weapons.

The organization promotes and verifies the adherence to the Chemical Weapons Convention, which prohibits the use of chemical weapons and requires their destruction. Verification consists both of evaluation of declarations by member states and onsite inspections.