1912 - THE FIRST INTERNATIONAL DRUG CONTROL TREATY (AND CANNABIS WAS NOT INCLUDED)
23 January 1912, the International Opium Convention was signed in the
Hague by representatives from China, France, Germany, Italy, Japan,
the Netherlands, Persia (Iran), Portugal, Russia, Siam (Thailand),
the UK and the British oversees territories (including British
India). Three years later, it entered into force in five countries.
The Convention gained, however, near-universal adherence after 1919
when all the countries signing the Peace Treaties of Versailles, St.
Germain-en-Laye etc. also became party to the International Opium
primary objective of the convention was to introduce restrictions on
exports as opposed to imposing prohibition or criminalising the use
and cultivation of opium, coca, and cannabis. That explains the
withdrawal of the United States and China, which were gravitating
towards prohibitionist approaches, as well as the beginning of
negotiations leading to the 1925 International Opium Convention in
1912 Hague International Opium Convention". United Nations
Office on Drugs and Crime. January 23, 2009.