The government's actions were further solidified by the United Nations' Convention on Psychotropic Substances in 1971 and the United Nations Convention Against Illicit Traffic in Narcotic Drugs and Psychotropic Substances in 1988.
Emakhemikhali alawulelwa kutsi ahambisane nemibandzela ye-Montreal Protocol kanye ne-1988 United Nations Convention Against Illicit Traffic kutiDzakamiva kanye naleminye imitsi.