books.google.nl - The Convention on the Prohibition of the Development, Production, Stockpiling and Use of Chemical Weapons and on Their Destruction entered into force on 29 April 1997. The treaty sets a time-frame of 10-15 years to destroy all stockpiles of chemical weapons held by States Parties and all facilities used...http://books.google.nl/books/about/OPCW_The_Legal_Texts.html?id=Y36eYpRtWXIC&utm_source=gb-gplus-shareOPCW: The Legal Texts