On 29 June 2011, the Bolivian government denounced the 1961 Single Convention on Narcotic Drugs as amended by the 1972 Protocol, indicating its intention to re-accede with a reservation allowing for the traditional use of the coca leaf. This decision was triggered by Bolivia’s need to balance its obligations under the international drug control system with its constitutional and other international legal commitments. The move follows the rejection of Bolivia’s proposal to amend the Single Convention by deleting the obligation to abolish coca leaf chewing (Article 49) earlier this year.
Khat leaves are cultivated in the highlands of the Horn of Africa, Southern Arabia and along the East African coast. In many countries, chewing khat is an age-old tradition. More recently, the mass migration of people from the Horn of Africa has been associated with the spread of khat usage to neighbouring countries, Europe and the rest of the world. Exact numbers of regular khat users on a worldwide scale do not exist, however estimates range up to 20 million. This paper presents the challenges associated with the spread of khat consumption.