Sudan, Egypt and Ethiopia: Nile Water and Security

Relations among Sudan, Egypt and Ethiopia revolve around a practical question: who can turn Blue Nile water into security, energy and bargaining power without making neighboring states more vulnerable? The answer runs through the Grand Ethiopian Renaissance Dam, usually known by its English acronym, GERD. The same infrastructure that expands Ethiopia’s development margin changes Egyptian water security and places Sudan at the center of the river’s regional operation.

Sudan occupies the most sensitive position in this triangle. It is downstream from the Ethiopian dam and upstream from Egypt. This geography opens possible gains from more regular flows, lower flood risk, cheaper energy and better agricultural planning. Direct exposure to dam-safety failures, sudden water releases and a lack of operational data creates immediate risks. Sudan’s civil war, which began in April 2023, turns this ambiguity into institutional fragility: a fragmented state negotiates worse and has much more difficulty converting technical benefits into public policy.

Summary

• Ethiopia, Egypt and Sudan form the decisive axis of the Eastern Nile: Ethiopia controls the main upstream dam, Egypt depends almost entirely on the Nile, and Sudan sits between the two.
• The GERD increases Ethiopia’s capacity to regulate the Blue Nile and produce energy. For Egypt, unilateral operation of the dam threatens water predictability during drought periods.
• Sudan’s position combines opportunity and risk. The dam can help the country control floods and plan irrigation, while physical proximity requires safety, transparency and coordination.
• The 2015 Declaration of Principles created a shared language of cooperation. The document left strong operational rules for drought, flood warnings, data exchange and dispute resolution unresolved.
• Sudan’s civil war turns water diplomacy into a regional security problem. External mediation, food crisis and the struggle over the state now affect river governance.

The Eastern Nile triangle

The Nile dispute is often presented as a rivalry between Egypt and Ethiopia. That image is understandable, since the two countries occupy opposite positions in the river system. Ethiopia is upstream, on the highlands where the Blue Nile rises. For Addis Ababa, water supports electrification, industrialization and sovereignty over strategic infrastructure. Egypt is downstream, in arid territory. For Cairo, the regularity of the Nile conditions water supply, agriculture and domestic stability.

The river’s geography makes this bilateral reading incomplete. Sudan receives the water leaving Ethiopia before it flows onward to Egypt. A safety failure, a poorly communicated release or an unexpected GERD operation would first affect Sudanese territory. The same intermediate location can bring gains that Egypt sees differently, especially reduced seasonal flooding and greater predictability for irrigation.

The water asymmetry gives the problem political intensity. A World Bank document on Eastern Nile planning recorded that Egypt obtains about 97% of its freshwater from the Nile. Sudan obtains about 91%, and roughly 85% of the flows reaching Egypt originate in Ethiopia. These figures explain the strategic centrality of the GERD: the project expands Ethiopia’s ability to use a resource that originates on its territory and changes the way water reaches downstream countries.

This difference in position appears in diplomatic language. Egypt emphasizes water security, legal guarantees and drought rules. Ethiopia insists on the right to equitable and reasonable use of the water, presenting the GERD as a national development project. Sudan oscillates between these two logics depending on the issue under discussion. Flow regulation may favor Khartoum. The lack of clear operating rules threatens Sudanese dams, communities and agricultural policies.

The GERD and the shift of power on the Blue Nile

The GERD is an Ethiopian hydroelectric dam built on the Blue Nile, near the border with Sudan. Ethiopia launched the project in 2011. Filling began in phases in 2020, and the official inauguration occurred in September 2025. Reuters described the project as a roughly $5 billion dam with 5,150 megawatts of planned capacity. It was Africa’s largest hydroelectric dam at that moment.

The dam’s main purpose is electricity generation. Even so, the infrastructure changes river politics by concentrating in Ethiopia a greater capacity to store, release and regulate the Blue Nile. For Addis Ababa, that capacity is part of a development strategy: expanding energy access, supplying the national economy and exporting electricity. For Egypt, the sensitive point is unilateral operation during years of drought or political tension.

The annual operation of the GERD involves technical choices that gain political value when governments distrust one another. A faster filling rhythm accelerates Ethiopian power generation. During difficult hydrological periods, that same rhythm reduces the safety margin perceived by Egypt and Sudan. Drought rules distribute costs among electricity generation, water reserves and downstream irrigation. Data exchange on rainfall, storage and discharges reduces risks only when stable technical channels survive diplomatic crises.

Renewed negotiations have preserved this impasse. In December 2023, Egypt said that talks over the GERD had failed. Egypt and Ethiopia each blamed the other for the diplomatic blockage. The flood episode of 2025 showed how ordinary hydrological events can become diplomatic disputes. After floods affected parts of Egypt and Sudan, Egypt accused Ethiopia of operating the dam unilaterally and recklessly. Ethiopia rejected the accusation and said regulated releases had reduced the damage. The disagreement reveals the structural problem: fragile agreements on data and warnings turn ordinary floods into strategic suspicion.

Why Sudan’s position is ambiguous

Sudan can benefit from the GERD in ways that distinguish its position from Egypt’s. Before the dam, seasonal Blue Nile floods created recurring risks for Sudanese populations and infrastructure. A large upstream reservoir smooths part of those flows, makes discharges easier to predict and reduces flood damage. More regular flows favor irrigation projects by giving farmers and authorities greater predictability in water use.

Electricity creates another incentive. Ethiopia presents the GERD as a project capable of generating energy for itself and for neighboring states. With adequate grids and stable commercial agreements, Sudan could import cheaper electricity. Integration into a regional grid would also connect its economy more closely to Ethiopian infrastructure. This possibility links water diplomacy to economic development: energy, agriculture and food come to depend on the same river regulation.

Sudan’s exposure, however, is too direct to be treated only as an opportunity. Sudan lies immediately downstream from the GERD. A structural failure or insufficient communication about discharges would first hit Sudanese territory. Water retention during a prolonged drought would create another kind of pressure on Khartoum. Khartoum has its own reasons to demand operational data, safety studies and warning systems. These demands express Sudanese vulnerabilities, not a simple reproduction of Egypt’s position.

Sudan’s ambiguity also derives from the relationship with its own dams and from its administrative capacity. A state capable of coordinating meteorology and reservoir operation can turn river regulation into an advantage. That coordination must reach agriculture, civil defense and foreign policy. A state at war, with divided institutions and collapsed services, benefits far less from the same regulation. In that scenario, the GERD reduces some natural risks, while the economic and administrative benefits depend on more stable national institutions.

The phrase "Sudan supports Egypt" or "Sudan supports Ethiopia" simplifies a problem that changes with the subject. On floods, Sudan tends to value flow regulation. On dam safety, it demands guarantees from Addis Ababa. In drought years, it moves closer to Egyptian concerns about binding rules. On energy, it sees gains in cooperation with Ethiopia. Sudanese policy is a moving combination of physical security, economic calculation and regional pressure.

Sudan’s civil war and river diplomacy

Sudan’s civil war began in April 2023. The Sudanese Armed Forces, led by Abdel Fattah al-Burhan, entered open conflict with the Rapid Support Forces. The rival group is commanded by Mohamed Hamdan Dagalo, known as Hemedti. The dispute destroyed the idea of a Sudan able to negotiate as a fully consolidated state actor. Since then, the country has faced fragmented territorial control, mass displacement, collapsed services and severe food insecurity.

With this fragmentation, Nile diplomacy changes. Negotiations over dams and water depend on ministries, technicians and reservoir operators. Diplomats and local authorities complete that chain. When the state loses coordination capacity, external commitments become less reliable and technical information circulates worse. Sudan may maintain a formal position in communiques. The implementation of any agreement requires institutions capable of operating on the ground.

The war increases pressure on food and energy. In a country with a severe humanitarian crisis, water regularity, irrigation and electricity stop being long-term issues and begin to affect survival and agricultural production. The World Food Programme, the Food and Agriculture Organization of the United Nations (FAO) and the United Nations Children’s Fund (UNICEF) warned in May 2026 that nearly 19.5 million people faced acute food insecurity in Sudan. In this context, any project capable of improving irrigation or energy gains potential value, while the war reduces the state’s ability to use that value.

External mediators add another layer. The United States, Saudi Arabia, the United Arab Emirates and Egypt proposed, in September 2025, a roadmap for Sudan with a humanitarian truce, a permanent ceasefire and a political transition. Egypt sees Sudan as an indispensable neighbor for its security to the south and has generally been closer to the Sudanese army. The United Arab Emirates has been accused of supporting the Rapid Support Forces, an accusation it denies. Saudi Arabia has an interest in Red Sea stability. The United States seeks to contain the humanitarian crisis and its regional effects.

This diplomacy over the war touches Nile diplomacy directly. A stable and cooperative Sudan would help Egypt and Ethiopia build technical routines around the GERD. A fragmented Sudan turns the river into another element of a regional crisis involving borders, weapons, displaced people and food. Water worsens insecurity when a lack of trust makes every flood, drought or water release harder to manage.

Declaration of Principles, framework agreement and the problem of compliance

The main trilateral document on the GERD is the Declaration of Principles signed by Egypt, Ethiopia and Sudan in Khartoum in 2015. The text affirms cooperation, development, regional integration, equitable and reasonable use, dam safety, data exchange and agreement on first filling and annual operation. As a diplomatic reference, the declaration provides a common language for the three governments. It frames the dam as an object of cooperation, above unilateral assertions of sovereignty or historical claims of acquired rights.

The declaration’s limit lies in how it resolves impasses. The text favors consultations, negotiations and eventual joint recourse to mediation or higher political channels. That architecture helps when governments want to bring positions closer together. The document, however, leaves sensitive operational questions for recurring negotiation: how much water to store during a multi-year drought, which data should circulate in real time, what warning should precede unusual releases and how to compensate damage from operation.

The dispute sits inside a broader debate over Nile governance. During the twentieth century, the 1929 and 1959 agreements favored Egypt and Sudan in water allocation. Ethiopia and other upstream countries challenged that order as an unfair basis for the basin as a whole. From that dissatisfaction, basin countries negotiated the Nile Cooperative Framework Agreement, known as the CFA. According to the Nile Basin Initiative, the intergovernmental forum created to support cooperation among basin countries, the agreement entered into force on October 13, 2024, for the states that ratified it.

The Framework Agreement reduces part of the basin’s institutional vacuum, although it leaves the GERD dispute unresolved. Egypt and Sudan remained outside the arrangement or rejected its central terms, fearing that a new basin order would weaken downstream positions inherited from earlier agreements. Two institutional layers therefore emerge: broader governance supported by several upstream countries and a specific negotiation over the GERD. The dam still requires technical rules accepted by Egypt, Ethiopia and Sudan.

The problem of compliance is concrete. The UN can discuss the issue, and the African Union can mediate talks. Neither operates reservoirs. Treaties and declarations organize commitments. Data exchange, drought management and dam safety continue to depend on trust and functioning national institutions. The most vulnerable link is precisely Sudan, the country that most needs immediate technical coordination and faces the deepest state fragmentation.

Future scenarios

The most pragmatic scenario is technical cooperation without a complete political agreement. Egypt, Ethiopia and Sudan could continue to disagree over legal principles, historical water allocation and sovereignty. Even in that framework, there would still be room for minimum management routines. Hydrological data exchange, flood warnings, drought protocols and seasonal technical meetings would be enough to reduce immediate risks. This path requires less political trust than recognition of the costs of non-coordination.

The scenario of continued impasse gains strength when none of the parties sees political benefit in concessions. In that case, the GERD continues operating as an Ethiopian sovereign project, and Egypt and Sudan maintain complaints against unilateral operation. The consequence would be a succession of diplomatic episodes. Every period of heavy rain, prolonged drought or unusual release could revive accusations, because there would be no procedure accepted by all to distinguish normal operation, technical error and political use of water.

A third scenario depends on Sudan’s war. If Sudan’s fragmentation deepens, Egypt, Ethiopia, Gulf countries and other actors will tend to treat the country increasingly as a security space. That path would bring water diplomacy closer to disputes over borders, weapons, ports, food and regional influence. The most concrete risk is the erosion of technical channels precisely when floods, droughts and dam operations require rapid communication.

There is also an institutional scenario of fragmented basin governance. The Cooperative Framework Agreement and associated institutions can advance among participating states. Egypt and Sudan, for their part, can remain outside or maintain objections. In that case, the Nile Basin would have partial governance: rules for some countries, a separate negotiation for the GERD and specific arrangements for crises. This overlap permits localized cooperation, although it makes it harder to create a rule recognized as legitimate by all decisive Eastern Nile actors.

Conclusion: Sudan as the point of articulation

Sudan is the point of articulation between Egyptian water security and Ethiopia’s development strategy on the Blue Nile. This position gives the country real opportunities: fewer floods, energy, more predictable irrigation and participation in a regional economy of water and electricity. The same position exposes Sudan to immediate risks of safety, information and drought management. Its water policy depends on balancing material gains, physical vulnerability and diplomatic pressure from the two neighbors.

The GERD transformed an old dispute over Nile use rights into a concrete dispute over infrastructure operation. The 2015 Declaration of Principles offered a common diplomatic vocabulary, and the Cooperative Framework Agreement expresses a broader shift in basin politics. Even so, everyday stability depends on shared data, drought rules, flood warnings, safety communication and institutions capable of fulfilling what governments promise.

Sudan’s civil war is the factor that most complicates this diplomatic engineering. A Sudan with functioning institutions could turn its intermediate position into mediation power and material gain. A fragmented Sudan turns the same geography into vulnerability. Eastern Nile stability depends, to a large extent, on a solution that treats water, energy, food, dam safety and civil war as connected parts of the same regional landscape.