Burkina Faso–Mali border
A long Sahel border inherited from the internal lines of French West Africa. After clashes over part of it in 1985, the World Court drew the disputed stretch in 1986 on the old colonial lines. Today both belong to a military-led Sahel alliance.
Written from cited sourcesLast checked 29 September 2026Suggest a correction
See it on the globe:Burkina Faso →Mali →
The Frontier Dispute case
On 14 October 1983 Upper Volta, soon renamed Burkina Faso, and Mali asked a chamber of the International Court of Justice to fix part of their land frontier. After serious clashes between the two armies at the very end of 1985, both asked for interim protection, and the chamber ordered provisional measures on 10 January 1986.[1]
In its judgment of 22 December 1986 the chamber relied on the intangibility of frontiers inherited from colonisation and on uti possidetis juris, which puts legal title ahead of effective possession: boundaries between administrative divisions of the same colonial power become international frontiers at independence. It weighed French laws and decrees, maps and the conduct of colonial administrators, and drew the line through the disputed area.[1]
“the principle of the intangibility of frontiers inherited from colonization”[1]
A Sahel alliance
Military leaders took power in Mali in August 2021 and in Burkina Faso in September 2022. With Niger, the two countries formed the Alliance of Sahel States, left the Economic Community of West African States in January 2024, and on 6 July 2024 signed a confederation treaty in Niamey. Mali’s Assimi Goïta said an attack on one of them would be an attack on all.[2]
Timeline
More borders
Mali
Sources
- [1]Frontier Dispute (Burkina Faso/Republic of Mali) · International Court of Justice
- [2]Niger, Mali and Burkina Faso military leaders sign new pact, rebuff ECOWAS · Al Jazeera · 6 July 2024
Map geometry from Natural Earth via world-atlas. See credits.