Nigeria's Diplomatic Demand for Opposition Leader's Release Sparks Regional Controversy
Nadapal, 21 February 2026
Nigeria’s intervention at the February 2026 C-5 Plus Summit demanding the unconditional release of Dr. Riek Machar has ignited debate across Africa. The SPLM/A-IO leader faces criminal investigation for commanding militia forces responsible for multiple deadly attacks across South Sudan, including strikes on the crucial Nadapal border crossing with Kenya. Critics argue Nigeria’s stance rewards armed rebellion and undermines South Sudan’s sovereignty whilst the opposition group declared intentions to capture the capital Juba. The controversy highlights tensions between diplomatic intervention and accountability for wartime atrocities in the region.
Timeline of Escalating Violence
The current crisis stems from a series of coordinated attacks that began in March 2025, when the SPLM/A-IO-affiliated ‘White Army’ launched an assault on a South Sudan People’s Defence Forces (SSPDF) garrison in Nasir [1]. This initial attack marked the beginning of a broader military campaign that has since expanded across multiple strategic locations. The SPLM/A-IO subsequently conducted attacks on Torit, Nadapal, Panyume, Pajut, Waat, and Yuai, demonstrating a systematic approach to disrupting government control across key regions [1]. The Nadapal border crossing, which serves as a vital link between South Sudan and Kenya, has been particularly affected by these operations, creating significant challenges for civilian movement and cross-border trade.
Opposition Declaration and Regional Stakes
The stakes escalated dramatically in January 2026 when the SPLM/A-IO declared its intention to capture Juba, South Sudan’s capital [1]. This bold declaration represents a significant escalation in the group’s military ambitions and has raised alarm bells across the region about the potential for full-scale civil conflict. The timing of this announcement coincides with South Sudan’s commitment to holding elections in December 2026, adding another layer of complexity to the political landscape [1]. The disruption of the Nadapal crossing takes on greater significance in this context, as it affects not only daily commerce but also the movement of South Sudanese refugees who may be considering return journeys ahead of the planned elections.
Nigeria’s Controversial Diplomatic Intervention
The diplomatic controversy reached its peak on 12 February 2026, when Nigeria’s Vice President Kashim Shettima, representing President Bola Ahmed Tinubu at the C-5 Plus Summit in Addis Ababa, demanded the ‘immediate and unconditional release’ of Dr. Riek Machar Teny Dhurgon [1]. This intervention has drawn sharp criticism from regional observers who view it as inappropriate interference in South Sudan’s internal affairs. Dr. Machar is currently under criminal investigation and trial for potential command responsibility in violence involving the SPLM/A-IO-White Army militia, which resulted in the deaths of South Sudanese soldiers, including General David Majur Dak [1]. Critics argue that Nigeria’s demand effectively rewards rebellion and provides a diplomatic lifeline to an armed insurgency whilst ignoring documented atrocities.
Path Forward and Regional Implications
Regional analysts suggest that Nigeria’s approach contradicts its previous diplomatic stance, particularly given its successful assistance to the Republic of Benin in thwarting a military coup on 7 December 2025 [1]. Dr. Sunday de John, Chairman of the South Sudan United Front-Progressive, argues that Nigeria should instead advocate for a bilateral or multilateral ceasefire and support the Kenya-led Tumaini mediation process in Nairobi [1]. The disruption of border crossings like Nadapal underscores the urgent need for such diplomatic solutions, as continued instability affects both refugee populations and host communities in neighbouring countries. The broader implications extend beyond South Sudan’s borders, with observers warning that releasing Dr. Machar without proper investigation could set a dangerous precedent that emboldens warlords across the continent [1].