The Organisation for the Prohibition of Chemical Weapons (OPCW) is an intergovernmental organisation and the implementing body for the Chemical Weapons Convention (CWC), which entered into force on 29 April 1997. The OPCW, with its 193 member states, has its seat in The Hague, Netherlands; it oversees the global endeavour for the permanent and verifiable elimination of chemical weapons. The Nobel Peace Prize 2013, announced October 11, 2013. Organisation for the Prohibition of Chemical Weapons, “for its extensive efforts to eliminate chemical weapons”. Wiki link Data: the Nobel Foundation (CC0).