100 Years of Chemical and Biological Arms Control.
17 June 2025 - Commemorating a Century of the Geneva Protocol: OPCW Statement on 100 Years of Chemical and Biological Arms Control , The "Century of the Geneva Protocol" refers to the 100th anniversary of the Protocol for the Prohibition of the Use in War of Asphyxiating, Poisonous or other Gases, and of Bacteriological Methods of Warfare, which was signed on June 17, 1925. Celebrations and commemorations marking this centenary have taken place throughout 2025, highlighting the Protocol's role as a foundational agreement in international law against chemical and biological weapons and paving the way for later treaties like the Biological Weapons Convention (BWC) and the Chemical Weapons Convention (CWC) . Date: The 100th anniversary occurred on June 17, 2025. The OPCW Director-General.