The Presidency Council,
composed of the heads of state of the member states. Supreme organ of the Union. Only body empowered to take decisions and unanimously. Its chairmanship is for a period of one year and by rotation between the Heads of State. Hold an ordinary session once a year and special sessions if necessary. Six sessions were held respectively at:
- Tunis, 21-23 January 1990,
- Algiers, 21-23 July 1990
- Ras Lanouf (Libya), 10-11 March 1991,
- Casablanca (Morocco), 15-16 September 1991,
- Nouakchott, 10-11 November 1992.
- Tunis, 2-3 April 1994.