The Abyei Dispute: Who is Right?

By  Amaju Ubur Yalamoi Ayani

The unresolved status of the Abyei Area stands as a stark indictment of failed diplomatic processes and an enduring obstacle to lasting peace between the Republic of Sudan and the Republic of South Sudan. The question of “Who is right?” in this contentious matter must be evaluated not merely through the lens of political expediency or economic interest, but through the principles of justice, the established rule of law, and the fundamental right to self-determination. When these criteria are applied, the argument for Abyei’s integration into the Republic of South Sudan holds significantly more weight, representing the only morally sound and legally justifiable outcome.

 A fertile, oil endowed territory straddling the volatile border of South Sudan and Sudan, the history of the Abyei dispute is a chronicle of missed opportunities and political manoeuvring, primarily centred on resource control and ethnic identity. The 2005 Comprehensive Peace Agreement (CPA) was the sine qua non for Southern Sudanese independence but left the Abyei status deliberately unresolved, a ticking time bomb now at the heart of the new relationship between the two Sudans. 

The subsequent failure to implement the agreed-upon referendum, primarily due to an intractable disagreement over who constitutes a resident eligible to vote, has been the central impediment. Khartoum insists on the inclusion of the nomadic Misseriya Arab herders in the vote, while Juba maintains that only the resident Ngok Dinka community which comprises nine chiefdoms should participate, effectively resulting in a numbers game designed to sway the outcome in one direction or the other.

The 2009 ruling by the Permanent Court of Arbitration (PCA) was meant to be a game-changer, redefining Abyei's boundaries and reducing its geographical size, a decision largely favorable to Sudan as it placed major oil fields outside the area. However, the PCA’s ruling failed to deliver the necessary political imprimatur to ensure implementation on the ground. Both parties have demonstrated a conspicuous lack of political will to make the compromises required for a durable settlement, preferring a strategy of creating facts on the ground through military incursions and supporting proxy militias, as evidenced by the SAF invasion in 2011.

The core argument of this article rests on the distinction between permanent residents and seasonal migrants. The Ngok Dinka people  which comprises nine chiefdoms are the undisputed indigenous inhabitants of the Abyei Area. They have cultivated this land for generations. Their lives, culture, and ancestral heritage are immutably tied to this specific geography. For the Ngok Dinka, Abyei is home in extremis.

In contrast, the presence of Misseriya Arab immigrants is defined by necessity and seasonal movement. Their annual migration southward is a recognized, traditional right for pasturage—a critical practice that must be respected and accommodated—but it does not confer the same political status as permanent residency. The fundamental principle of self-determination, the cornerstone of modern statehood, dictates that the political future of a disputed territory is determined only by those who permanently live there. To grant equal political weight in a sovereignty referendum to a transient population would be to fundamentally distort democratic principles, and frankly, flies in the face of international norms regarding territorial integrity.

In my opinion, the Ngok Dinka claim is not merely an emotional or historical appeal; it is one affirmed by international legal precedent. The 2009 ruling by the Permanent Court of Arbitration (PCA) in The Hague, for example, provided a clear, legally binding definition of the Abyei Area. The PCA’s meticulous work in delineating the boundaries based on evidence of the nine Ngok Dinka chiefdoms was a victory for evidential fact over political manoeuvring.

While Sudan subsequently rejected aspects of this ruling, claiming it was an overreach, the international legal community recognized it as a valid, impartial interpretation of the boundary commissions' original intent. Adherence to this ruling offers the clearest, most impartial template for defining the physical area in question. To ignore this award is to pick and choose which aspects of international law one wishes to obey, a recipe for diplomatic chaos.

Furthermore, the historic 2005 Comprehensive Peace Agreement (CPA) that paved the way for South Sudan’s independence, promised the people of Abyei a parallel opportunity to determine their own fate through an internationally supervised referendum. The failure to hold this vote simultaneously with the Southern Sudan referendum in January 2011, is a colossal breach of the CPA's spirit and a betrayal of the trust placed in the peace process.

The roadblock has always been Sudan's insistence on including the Misseriya nomads in the voting register. This move is  apparently a calculated political manoeuvre aimed at diluting the Ngok Dinka’s vote and engineer an outcome favourable to Khartoum. The Ngok Dinka's community-led referendum in 2013, while not internationally recognized due to procedural specifics, serves as a powerful, unambiguous declaration of the local population's will: they chose the Republic of South Sudan overwhelmingly. To ignore this expression of self-determination is an intentional attempt to undermine the very purpose of the CPA's Abyei Protocol, thereby kicking the can down the road indefinitely.

With the status of Abyei swimming in limbo, the Republic of South Sudan is not without leverage in this ongoing diplomatic chessboard. The current political vacuum and civil war in Sudan have fundamentally altered the balance of power, creating critical opportunities to press Juba's case and win the argument on the global stage. 

First and foremost, South Sudan should exploit Khartoum's diminishing capacity. The Sudan's ongoing conflict has severely compromised the central government's state capacity to manage, secure, or administer border regions effectively. For example, the increased, unauthorized presence of the Rapid Support Forces (RSF) in Northern Abyei is undermining the area's demilitarized status and Khartoum's credible claim to governance. This dysfunction contrasts sharply with South Sudan’s commitment to provide sustainable security in the Abyei Area. This presents a clear argument that Juba is better positioned to deploy legitimate security forces and administration without Sudan’s permission. 

Diplomatically, South Sudan can champion regional mediation and local consensus. It can enhance these efforts through the Intergovernmental Authority on Development (GAD) and the African Union (AU) to adopt a coordinated mediation approach. By fostering successful community-level peace building conferences between the Ngok Dinka and Misseriya communities, South Sudan can present a viable bottom-up model for peaceful co-existence and administration that regional bodies can endorse, contrasting it with the top-down failure of Khartoum-led committees, which have been moribund since 2017.

Upholding the PCA ruling and enhancing the UNISFA's mandate are also imperative. The Republic of South Sudan should consistently advocate for the PCA boundary definition as the legitimate starting point for any administrative or political discussion. Working with the United Nations Security Council (UNSC) to strengthen the UNISFA's mandate to enforce full demilitarization can create the necessary security conditions for political progress and the eventual safe return of displaced persons—a crucial humanitarian exigency exacerbated by the influx of refugees from the Sudan war.

Finally, South Sudan can leverage economic interdependence. The ongoing civil war in Sudan has severely disrupted South Sudan's oil exports that transit through Sudan, impacting Juba's economy. This mutual vulnerability offers a strong strategic imperative for both parties to prioritize a stable Abyei to restore economic stability for both nations—a powerful, pragmatic argument for resolution through the pipeline politics.

 The dispute over Abyei has dragged on for too long, making it a geopolitical football kicked between two capitals while the people on the ground suffer from a security vacuum managed only by UNISFA peacekeepers. The oil reserves in the region, while adding complexities, should not be allowed to entirely obscure the human dimension of the crisis and the humanitarian exigency created by regional conflict.

Justice in the Abyei dispute means acknowledging demographic reality, upholding international legal rulings, and, most importantly, respecting the will of the people who permanently call Abyei home. The international community must put its shoulder to the wheel and eschew half-measures. The path to lasting stability lies not in endless negotiation over voting demographics, but in recognizing So South Sudan's rightful claim to an area that is culturally, ethnically, and historically Dinka Ngok territory. The right to self-determination must prevail, allowing all parties to finally turn the page on this bitter chapter.

About the author 

Amaju Ubur Yalamoi Ayani, aka Amaju Joseph Ubur Ayani is a teacher and political commentator. He holds a Master of Arts Degree in International Relations, a BSc Degree in Political Science and a Diploma in Civics. He can be reached via This email address is being protected from spambots. You need JavaScript enabled to view it..