Nigeria’s migration arrangement with the United Kingdom raises deeper questions than deportation. At stake are constitutional authority, international legal obligations, and the geo-economic realities shaping mobility.
The recent announcement by Nigeria’s Federal Ministry of Interior on a new migration arrangement with the United Kingdom has triggered a wave of public anxiety anchored in a deceptively simple question: has Nigeria ceded a portion of its sovereign authority to determine who its citizens are?
This question goes to the heart of statehood. Citizenship is not merely an administrative classification; it is, as Hannah Arendt famously framed it, “the right to have rights.” The authority to define who belongs, and by implication, who can be returned, is one of the most fundamental expressions of sovereignty. Under the Constitution of the Federal Republic of Nigeria 1999, citizenship is clearly defined and constitutionally protected, and no bilateral arrangement can legally displace this authority. Yet, in contemporary international relations, sovereignty is rarely diminished through explicit legal surrender; it is more often recalibrated through practice, through administrative processes, institutional capacity, and the pressures of diplomacy.
The Nigeria–UK returns arrangement must therefore be read not only as a legal instrument, but as a product of intersecting legal obligations, political incentives, and structural asymmetries. On its face, the agreement reflects the familiar architecture of modern migration governance: assurances of dignity, provisions for case-by-case identity verification, and safeguards for vulnerable persons, and commitments to reintegration. These elements align with Nigeria’s obligations under international human rights law, particularly the Universal Declaration of Human Rights, which affirms in Article 15 that everyone has the right to a nationality and should not be arbitrarily deprived of it. They also resonate with broader treaty obligations, including the International Covenant on Civil and Political Rights, which protects against arbitrary interference with identity and ensures due process in decisions affecting fundamental rights.
However, international law does not merely affirm rights; it also structures state responsibilities. One of its less discussed but deeply consequential principles is the obligation of states to readmit their own nationals. While not always codified in a single treaty provision, this obligation is widely recognised in customary international law and reflected in state practice. It is implicit in the functioning of the international system: without it, deportation regimes would collapse, and the allocation of responsibility among states would become untenable. In this sense, Nigeria’s engagement in a returns arrangement is not extraordinary; it is part of a broader international legal order in which states balance the right to exclude non-nationals with the duty to receive their citizens.
Yet, international law also imposes limits. The principle of non-refoulement, embedded in instruments such as the 1951 Refugee Convention and reinforced through human rights jurisprudence, prohibits the return of individuals to territories where they face persecution, torture, or inhuman treatment. Similarly, the Protocol to Prevent, Suppress and Punish Trafficking in Persons requires states to identify and protect victims of trafficking, ensuring that returns do not expose them to further harm. These obligations mean that any returns framework must be more than administratively efficient; it must be substantively just, procedurally fair, and attentive to vulnerability.
It is within this layered legal environment that the diplomatic character of the agreement becomes visible. The language of dignity, safeguards, and cooperation is not accidental; it reflects what might be described as the normative grammar of migration diplomacy. As Kofi Annan observed, “human rights are not a privilege conferred by governments; they are every human being’s entitlement.”
From the perspective of the United Kingdom, migration control has become a central axis of domestic politics. The aftershocks of Brexit have heightened public expectations around border sovereignty and the enforcement of immigration rules. Returns agreements, in this context, are not merely technical instruments; they are political tools that demonstrate state capacity. Efficiency in deportation is framed as evidence of control, and cooperation with countries of origin becomes a critical component of that narrative.
For Nigeria, the calculus is more complex and extends beyond migration management. The UK is a key partner in trade, finance, education, and security. The Nigerian diaspora constitutes a significant geo-economic asset, contributing substantial remittances and forming a bridge between both economies. Migration cooperation is therefore embedded within a wider matrix of diplomatic and economic relations. As Albert O. Hirschman argued, asymmetrical interdependence can generate subtle forms of influence, where the ability to grant or restrict access, whether to markets, mobility, or financial systems, creates leverage. In this light, returns agreements can be understood as part of a broader negotiation over access and reciprocity.
This brings into focus the question of power. While international law is formally based on sovereign equality, the realities of global politics are shaped by material asymmetries. The United Kingdom occupies a position of structural advantage in areas that matter to Nigeria, including visa regimes, financial infrastructure, and global regulatory influence. These asymmetries do not negate Nigeria’s sovereignty, but they condition how it is exercised. As Robert Keohane has noted, cooperation often occurs “under conditions of asymmetric interdependence,” where weaker states retain formal autonomy but operate within constrained strategic environments.
It is within this context that public concerns about documentation and identity verification emerge. The Ministry emphasizes “secured travel documentation” and “case-by-case verification,” but the underlying question is whether, in practice, UK-generated documentation could acquire a level of evidentiary weight that subtly shifts the balance of determination. No bilateral agreement can override Nigeria’s constitutional authority to confirm nationality. However, administrative processes, especially when designed for efficiency, can evolve in ways that privilege speed over scrutiny. In such cases, sovereignty is not formally ceded; it is functionally recalibrated.
The decisive factor in this regard is institutional capacity. Sovereignty, in its practical sense, is exercised through institutions. Robust identity systems, reliable biometric databases, effective inter-agency coordination, and transparent verification procedures are essential to ensuring that nationality determinations are accurate and defensible. Where such systems are strong, cooperation need not compromise autonomy. Where they are weak or uneven, the risk is not legal dispossession but administrative dilution. Verification may become expedited rather than rigorous, and oversight mechanisms may struggle to keep pace with operational demands. This reflects a broader insight captured by Francis Fukuyama, who distinguishes between the scope of the state and the strength of the state: possessing authority is not the same as effectively exercising it.
The human dimension of returns further complicates the picture. International law requires that deportation processes respect dignity, ensure due process, and protect vulnerable individuals. The identification of trafficking victims, in particular, is not a procedural detail but a legal obligation. Failure to operationalise these safeguards can expose states to international criticism and, more importantly, to moral failure. Reintegration is equally critical. Deportation without reintegration support risks creating cycles of irregular migration, as returnees face the same structural conditions that prompted their departure. In this sense, the sustainability of returns is as much a development question as it is a legal or diplomatic one.
The provision that returnees may re-enter the United Kingdom if they meet applicable immigration requirements introduces a further geo-economic layer. Global migration regimes are structured systems that allocate mobility unevenly. As Dani Rodrik has observed, the rules of globalisation tend to favour capital over labour, facilitating the movement of goods and finance while tightly regulating the movement of people. For countries like Nigeria, the strategic challenge is not only to manage returns but to expand pathways for lawful mobility, skills exchange, and diaspora engagement. Without such balance, returns arrangements risk reinforcing a one-sided mobility regime in which exit is constrained and re-entry is conditional.
Against this backdrop, it is important to resist both extremes of public discourse. The claim that Nigeria has lost its sovereignty is an overstatement; the constitutional and legal foundations of citizenship remain intact. At the same time, dismissing public concerns as mere misunderstanding overlooks the more subtle ways in which sovereignty can be affected in practice. The issue is not the existence of sovereignty, but the quality of its exercise.
Transparency is therefore essential. For a matter as sensitive as citizenship, opacity invites suspicion and erodes trust. Detailed protocols on identity verification, clear delineation of institutional roles, and accessible mechanisms for dispute resolution would go a long way in strengthening public confidence. Independent oversight, including engagement with civil society and professional bodies, could further enhance accountability.
More fundamentally, the episode points to the need for a coherent national migration strategy. Reactive, ad hoc arrangements are insufficient in a world where migration is increasingly central to economic and political life. Nigeria requires an integrated framework that connects border management, labour mobility, diaspora policy, and human rights. Such a framework would enable the country to engage international partners from a position of clarity and strategic intent, rather than as a respondent to external pressures.
In the final analysis, sovereignty in the twenty-first century is not a static possession but a continuous practice. It is exercised not only through legal authority but through institutional competence, diplomatic strategy, and policy coherence. As Henry Kissinger once remarked, a nation’s survival depends on its ability to balance commitments and capabilities. In the realm of migration governance, this balance is particularly delicate.
The Nigeria–UK returns arrangement sits at the intersection of law, diplomacy, and political economy. It reflects the realities of interdependence, the constraints of asymmetry, and the enduring importance of institutional strength. The challenge for Nigeria is not to retreat from cooperation, but to shape it, ensuring that engagement is grounded in transparency, guided by national interest, and anchored in the effective exercise of sovereignty.
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John Onyeukwu, is a lawyer and public policy analyst with interdisciplinary expertise in law, governance, and institutional reform. He holds an LL.B (Hons) from Obafemi Awolowo University, an LL.M from the University of Lagos, and dual master’s degrees in Public Policy from the University of York and Central European University. He also earned a Mini-MBA. John has managed development projects on governance, public finance, civic engagement, and service delivery. He can be reached on john@apexlegal.com.ng
Politics of sovereignty: Nigeria-UK returns deal and test of state capacity