The OPCW oversees the global endeavour to permanently eliminate chemical weapons and is the implementing body of the Chemical Weapons Convention. Since its entry into force in 1997 the Convention has become the fastest growing arms treaty in history with 192 States Parties. Over 90 percent of all chemical arsenals declared by existing States Parties have been destroyed under OPCW verification. This is an unprecedented achievement in disarmament. For its extensive efforts in eliminating chemical weapons, the OPCW received the 2013 Nobel Prize for Peace.

Discover more about chemical weapons, the OPCW, and how to get involved.

The Fundamentals

Fact Sheets
Facts, figures and history about chemical weapons, the Chemical Weapon Convention and the OPCW in six official languages.



Get To Know Us

Visiting the OPCW
The OPCW provides briefings to visiting groups on its mission and work. Arrange a visit to the OPCW headquarters in The Hague, Netherlands.

Hague International Open Day
Each September, many international organisations in The Hague offer free and rare access to a number of architecturally, historically, culturally and globally significant buildings across the city of The Hague. Get a behind-the-scenes look into the OPCW and the City of Peace and Justice.

Knowledge Network

E-Learning Modules
A series of online courses covering the OPCW, the Chemical Weapons Convention (CWC), National Implementation Legislation, and the verification regime of the CWC.

Science and Technology Corner
Informational material and educational resources for scientists, researchers, and chemistry practitioners.

The Hague Ethical Guidelines
A set of ethical guidelines related to the Chemical Weapons Convention to promote a culture of responsible conduct in the chemical sciences and to guard against the misuse of chemistry.

Spread the Word

The Fires Project
Produced by the OPCW, a series of short documentary films that tell the captivating personal stories of individuals whose lives have been transformed by an aspect of chemical warfare. Learn how to host a screening. 

Shine a Spotlight

OPCW-The Hague Award
Created in partnership with the City of The Hague, the OPCW The Hague award honours and recognises individuals and non-profit, non-governmental organisations that have made an outstanding contribution to achieving a world free of chemical weapons.

The Nobel Peace Prize
The OPCW was awarded the Nobel Prize for Peace for "its extensive efforts to eliminate chemical weapons".