Lake Malawi (Lake Nyasa) territorial dispute

The Lake Malawi (Lake Nyasa) territorial dispute is a long-running diplomatic and legal disagreement between the Republic of Malawi and the United Republic of Tanzania over the location of the international boundary in the lake and ownership/sovereign rights to its waters and resources. The disagreement has historical roots in colonial treaties, intensified after the awarding of hydrocarbon exploration licences in the 2010s, and has been the subject of regional mediation efforts. In late 2024, Tanzania issued guidance to schools to use an official map showing the border running through the middle of the lake, a move that further highlighted the dispute in public debate.