The $500 Billion Maritime Rift Between Kenya and Somalia

A Technical Maritime Boundary Disagreement Has Evolved Into Geopolitical Confrontation

An oil and gas field survey boat.

An oil and gas field survey boat.

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Experts often describe the maritime dispute between Kenya and Somalia as a technical disagreement over where to draw an artificial boundary line in the Indian Ocean. At its root, however, the question of how much energy wealth lies beneath contested waters drives the dispute.

At the center of the dispute lies a triangular maritime zone of roughly 38,500 square miles in the western Indian Ocean. The area forms part of the Lamu Basin, a sedimentary offshore formation stretching along the Kenya–Somalia coastline that has long attracted international energy companies.

At the center of the dispute lies a triangular maritime zone of roughly 38,500 square miles in the western Indian Ocean.

Interest in the basin intensified during the early 2010s as offshore gas finds in Mozambique and Tanzania transformed East Africa into one of the world’s emerging energy frontiers. Geological similarities between those basins and the Lamu Basin raised expectations that the waters off Kenya and Somalia could also contain commercially viable oil and gas reserves.

Several international companies moved quickly to secure exploration rights. The French energy major TotalEnergies acquired a 40 percent interest in multiple offshore blocks covering more than 11,500 square miles in Kenya’s offshore Lamu Basin. Texas-based Anadarko Petroleum initially operated these blocks before Occidental acquired the company. Italy’s Eni also entered the basin and drilled exploratory wells.

The basin’s potential is significant. Seismic surveys in Kenya’s offshore Lamu Basin indicate that some prospects alone may contain up to 3.7 billion barrels of oil and more than 10 trillion cubic feet of gas. Industry analysis suggests that offshore Somali sedimentary basins may contain tens of billions of barrels of oil across multiple deep-water prospects.

Even if only a portion of those resources proves commercially recoverable, the combined hydrocarbon potential of the Kenya–Somalia offshore corridor could plausibly translate into $200 billion to $500 billion in lifetime resource value, depending on recovery rates and long-term energy prices. Such estimates help explain why what might otherwise have remained a technical maritime boundary disagreement evolved into geopolitical confrontation.

Kenya long argued that the maritime border should extend eastward along a line of latitude from the point where the land boundary meets the sea. Somalia maintained that the boundary instead should follow the direction of the land border and extend southeastward along an equidistance line into the Indian Ocean.

Offshore energy resources that could potentially transform the economies of both countries remain locked beneath the seabed.

The difference between these approaches created the triangular maritime zone now at the center of the dispute.
In 2014, Somalia brought the case before the International Court of Justice. Seven years later, the court ruled largely in Somalia’s favor, rejecting Kenya’s latitude argument and redrawing the maritime boundary using equidistance principles. Kenya rejected the decision.

The result is a maritime boundary legally determined but politically unresolved. Offshore energy resources that could potentially transform the economies of both countries remain locked beneath the seabed.

The dispute is unfolding at a time when the western Indian Ocean is becoming strategically important. The coastline stretching from Kenya to Somalia lies close to shipping lanes connecting the Red Sea, the Gulf, and the wider Middle East energy system. Analysts writing in regional outlets such as Garowe Online and the Addis Standard note how maritime infrastructure, port investments, and energy exploration are transforming the Horn of Africa into a strategic extension of Middle Eastern geopolitics.

Control over offshore hydrocarbons carries implications beyond energy revenue. It shapes the economic geography of the western Indian Ocean—determining where export terminals are built, which maritime corridors carry energy supplies to global markets, and which states emerge as future energy producers. For both Nairobi and Mogadishu, the dispute is about far more than maritime cartography; it is about the potential transformation of the Horn of Africa’s economic landscape.

Siyad Madey is a Nairobi-based lawyer and policy analyst with over twenty-five years of experience across the public and private sectors in East Africa and the Horn of Africa. He previously served more than fifteen years in Kenya’s National Bank.
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