The Organization for the Prohibition of Chemical Weapons (OPCW) is the body in charge of executing and complying with the Convention on the Prohibition of the Development, Production, Storage and Use of Chemical Weapons and on their Destruction, which entered into force on April 29, 1997, whose headquarters are in The Hague, the Netherlands. The Convention establishes among the general obligations of the States the following: 

a) Not to develop, produce, otherwise acquire, store or preserve chemical weapons or transfer those weapons to anyone, directly or indirectly;
b) Do not use chemical weapons;
c) Failure to initiate military preparations for the use of chemical weapons;
d) Not to help, encourage or induce in any way anyone to carry out any activity prohibited to the States Parties by this Convention.