While most African countries have no real cause for alarm concerning narcotic drug addiction and illicit trafficking, the possibilities for the future in such a huge and rapidly changing area call for the utmost vigilance. Only in this way can the tragedy of large-scale addiction which has afflicted other wide regions of the world be avoided. Urbanisation, internal migration, and detribalisation are factors which might well sow the seeds of future trouble. The United Nations therefore organised this regional seminar, the first of its kind in Africa, as part of its programme of technical assistance in narcotics control.