Bolivia's Reservations to 1988 United Nations Convention against Illicit Traffic in Narcotic Drugs and Psychotropic Substances [PDF]
Reservation made upon signature and confirmed upon ratification:
The Republic of Bolivia places on record its express reservation to article 3, paragraph 2, and declares the inapplicability to Bolivia of those provisions of that paragraph which could be interpreted as establishing as a criminal offence the use, consumption, possession, purchase or cultivation of the coca leaf for personal consumption.
For Bolivia such an interpretation of that paragraph is contrary to principles of its Constitution and basic concepts of its legal system which embody respect for the culture, legitimate practices, values and attributes of the nationalities making up Bolivia's population.
Bolivia’s legal system recognizes the ancestral nature of the licit use of the coca leaf, which, for much of Bolivia's population, dates back over centuries. In formulating this reservation, Bolivia considers that:
At the same time, the Republic of Bolivia will continue to take all necessary legal measures to control the illicit cultivation of coca for the production of narcotic drugs, as well as the illicit consumption, use and purchase of narcotic drugs and psychotropic substances.

Where strict bans on khat have been introduced they have had severe unintended negative consequences and failed to further the integration, social incusion and economic prosperity of Somali communities in particular, which chew khat most widely.

Drug Law Reform in Latin America is a project of the TNI Drugs & Democracy programme
"Promoting a more effective and humane drug policy in Latin America"
In 2011 the 1961 UN Single Convention on drugs will be in place for 50 years. In 2012 the international drug control system will exist 100 years since the International Opium Convention was signed in 1912 in The Hague. Does it still serve its purpose or is a reform of the UN Drug Conventions needed? This site provides critical background.