AU Peace and Security Council — Nigeria’s Chairmanship, Climate-Security Nexus, and the Operational Gap

Lake Chad Basin Vulnerability, Sahel Instability, and the Limits of Thematic Engagement

Executive Summary

Nigeria’s assumption of the African Union Peace and Security Council (PSC) chairmanship in May 2026 brings forward an agenda of real strategic importance, but one constrained by familiar institutional limits. The provisional programme of work, built around four ambassadorial-level sessions and a largely thematic agenda, highlights the right issues: the climate-security nexus, the Lake Chad Basin, and instability across the Sahel. At the same time, it exposes the continuing difficulty of translating strategic awareness into operational effect.

Nigeria’s chairmanship reflects genuine clarity about the continent’s most pressing structural security pressures. The problem is not the substance of the agenda. It is the format through which that agenda is being pursued. A predominantly virtual, closed-session programme centred on thematic discussion is a limited instrument for security environments evolving in real time and demanding operational coordination rather than conceptual alignment alone.

ASA Assessment: Nigeria’s chairmanship is strategically well-framed, but the gap between policy articulation and operational impact remains the defining constraint on what the PSC is likely to achieve during this cycle.

Climate-Security Nexus: The Most Underestimated Structural Driver

The decision to open Nigeria’s chairmanship with a session on the impact of climate change on the crises in the Lake Chad Basin and the Sahel is strategically significant. This is not a peripheral or future-facing issue. It is one of the most important structural drivers of instability now shaping the wider region.

The contraction of Lake Chad, from roughly 25,000 square kilometres to less than 2,500 square kilometres over recent decades, is not simply an environmental fact. It represents a profound collapse in the resource base on which millions of people have depended through fishing, agriculture, and pastoralism. That transformation has disrupted livelihoods at scale across multiple states and intensified competition over land, water, and survival.

The security implications are direct. Communities stripped of viable livelihoods become more vulnerable to recruitment by armed groups offering income, protection, identity, or coercive alternatives. In the Basin, this has strengthened the operating environment for Boko Haram, ISWAP, and other jihadist factions. Across the Sahel, rising temperatures, increasing ecological stress, and resource scarcity are amplifying farmer-herder conflict, weakening already fragile governance systems, and creating conditions in which extremist and armed actors can operate more effectively.

ASA Early Warning for Investors and Development Actors: Climate-security risk in the Lake Chad Basin and Sahel should now be treated as an immediate operating condition rather than a future trend. Investment planning, development programming, and field operations that continue to treat climate pressures as secondary variables will misread the conflict environment they are trying to navigate.

MNJTF: A Critical Instrument Under Compounding Pressure

The inclusion of Multinational Joint Task Force (MNJTF) activities in the May programme correctly reflects the force’s continuing importance in the Lake Chad Basin. It remains the primary instrument of coordinated regional military action against jihadist groups operating across the Basin, and its role is still strategically indispensable.

But the pressure on the MNJTF is increasing. The conflict environment is becoming more complex, armed groups are adapting quickly, and the resource and capability base available to the force is not expanding at a pace that matches the threat environment. The MNJTF continues to disrupt militant activity and remains an important pillar of regional security coordination. Yet its operational effectiveness is being constrained by unpredictable funding, coordination difficulties among troop-contributing countries, and capability gaps in areas such as counter-drone systems, intelligence integration, mobility, and anti-IED response.

More fundamentally, the force is operating in an environment where the conflict drivers are not purely ideological or military. They are also ecological, economic, and governance-related. That means military pressure alone, however tactically effective, cannot stabilise the wider conflict system.

ASA Assessment: The MNJTF remains necessary, but necessity should not be confused with adequacy. Without stronger resourcing and a strategy that more explicitly integrates climate-security and livelihood-collapse dynamics, the force will continue to manage symptoms more effectively than causes.

Institutional Configuration: The Gap Between Discourse and Impact

The structure of Nigeria’s PSC programme reflects a broader pattern that has characterised the Council’s engagement for multiple chairmanships. All sessions are at ambassadorial level. Most are virtual. There are no open sessions. The overall emphasis remains thematic rather than intervention-oriented.

These choices carry consequences. The absence of open sessions reduces transparency and narrows stakeholder participation. The virtual format limits the informal diplomacy that often matters most in building consensus among member states. Corridor conversations, side engagements, and unscripted political exchanges are often central to moving difficult security issues from discussion into action. Their reduction weakens one of the PSC’s few practical advantages as a diplomatic body.

The thematic emphasis also creates a familiar risk. It can produce strong conceptual framing without generating mechanisms for operational follow-through. This is not because thematic work lacks value. It does not. The problem is that conceptual sophistication, by itself, rarely changes conditions on the ground. Without institutional pathways linking policy debate to implementation, the PSC risks becoming more strategically articulate than operationally consequential.

ASA Assessment: The operational gap is no longer a secondary weakness in the PSC model. It is the central institutional constraint shaping the Council’s real-world impact.

The Peace Fund and the Limits of Financial Architecture

The planned joint retreat involving the PSC, the PRC Sub-Committee, and the AU Peace Fund Board of Trustees offers one of the few opportunities within this chairmanship to move beyond thematic discussion and address one of the most persistent weaknesses in Africa’s continental security architecture: the mismatch between strategic ambition and financial capacity.

For years, the AU’s peace and security mechanisms have been constrained by dependence on external funding, uneven disbursement frameworks, and weak alignment between financial tools and operational needs. That dependence affects not only deployment capacity, but also institutional confidence and strategic autonomy. A continental body that cannot reliably finance its own peace operations will always face limits in translating policy intent into action.

The retreat therefore matters, but only if it produces decisions rather than reaffirmations. The issue is no longer whether better coordination is desirable. It is whether member states and institutions are willing to move from procedural support for the Peace Fund toward genuine financial and operational alignment.

ASA Advisory for AU Institutions and Member States: The retreat should prioritise concrete steps to reduce external dependency, improve disbursement responsiveness, and align Peace Fund mechanisms more directly with the operational realities faced by deployed or regionally mandated security forces.

Strategic Outlook: Policy Clarity Without Operational Breakthrough

Nigeria’s chairmanship is likely to advance continental discussion on climate-security, Lake Chad Basin instability, and the wider Sahel crisis in ways that are strategically serious and intellectually coherent. That is not insignificant. The framing of these issues as interconnected and structural reflects an important level of political recognition within the PSC.

But recognition alone will not close the operational gap. The deeper challenge is converting policy clarity into changed behaviour by institutions, member states, and deployed mechanisms. That is unlikely to be achieved within the timeframe of a single chairmanship, especially through a programme that remains largely thematic in design.

The most likely outcome is therefore one of conceptual progress without operational breakthrough. Nigeria’s chairmanship may sharpen the continental understanding of key security drivers, but the structural limitations of the PSC will continue to constrain implementation unless follow-through mechanisms are strengthened beyond the chairmanship itself.

ASA Outlook: The May 2026 programme is likely to improve strategic framing more than operational delivery. The core test of Nigeria’s chairmanship will not be whether it identifies the right issues, but whether it can push the PSC even marginally closer to actionable security coordination.

ASA Core Conclusion: Nigeria’s leadership of the PSC reflects genuine strategic awareness of some of Africa’s most consequential security pressures. The decisive challenge remains the one that has repeatedly limited the Council’s effectiveness: the distance between thematic engagement and operational impact. Whether the PSC continues to function primarily as a forum for sophisticated diagnosis or begins to shape more meaningful responses on the ground, remains one of the most important open questions in Africa’s continental security architecture.

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