For over fifty years there has been international co-operation in the control of narcotic drugs. This co-operation has expanded in scope and depth as the years have passed since January 23, 1912, when the International Opium Convention was signed at The Hague. Four more conventions and three protocols deal with the international control of narcotics, and two agreements aim at suppressing opium-smoking in the Far East. The most recent convention, the Single Convention on Narcotic Drugs signed at New York on March 30, 1961, does little to advance the steps already taken but rather consolidates much of the work accomplished in the preceding years.
