24–28 November 2025
World Forum, The Hague
The Conference of the States Parties (CSP) oversees the implementation of the Chemical Weapons Convention, promotes the Convention’s objectives, and reviews compliance with the treaty. The Conference is composed of representatives of all Member States of the OPCW, each of which has one vote. The CSP meets annually in The Hague.
Logistics
Find out how to get to the conference, where to stay, details about venue facilities and more.
Delegations
Information for delegations registering to attend the Conference, including credentials and delegation composition.
Non-Governmental Organisations
Information for civil society representatives, including how to apply to attend the Conference.