NEW YORK: The United Nations is at a pivotal moment as it nears the selection of its next Secretary-General, with the transition expected to conclude between October and December 2026. The current Secretary-General, António Guterres, will complete his second term on 31 December 2026, setting the stage for a process that has already sparked intense scrutiny over the office’s evolving responsibilities and effectiveness. The upcoming leader will inherit a world marked by heightened geopolitical tensions, persistent conflicts, and a multilateral system under strain, according to a comprehensive review of the UN’s challenges released in August 2026 by the Policy Centre, a think tank based in New York.
The review, authored by Ferid Belhaj, argues that the Secretary-General’s growing mandates have led to “mission inflation,” where the organization’s goals outpace its authority and resources. This phenomenon, Belhaj contends, risks diluting the UN’s ability to fulfill its core mission of maintaining international peace and security. The paper, titled The Secretary-General of Everything and the United Nations of Nothing, calls for a more focused approach, emphasizing that the next leader must prioritize conflict prevention and diplomatic engagement over expanding the Secretariat’s role in areas like development, climate, and health. “The UN cannot be everything to everyone,” Belhaj stated in an interview. “Its strength lies in its political legitimacy and ability to mediate, not in taking on every global challenge.”
The selection process, which includes interactive dialogues with candidates, a public town hall, and a Security Council review, is set to culminate in the General Assembly’s confirmation. However, the debate over the Secretary-General’s role has intensified amid concerns about the organization’s capacity to address pressing issues. The UN’s Peace Outlook 2026 highlights that over 25% of the world’s population lives in conflict zones, with nearly 120 million people displaced. In 2025 alone, forced displacement reached 117 million, according to the UN’s Sustainable Development Goal report, underscoring the urgency of the next leader’s priorities.
Belhaj’s analysis underscores the need for the next Secretary-General to adopt a “politically assertive” stance, leveraging the authority granted under Article 99 of the UN Charter. This provision allows the Secretary-General to bring any matter threatening international peace and security to the Security Council. Belhaj argues that this power should not be reserved for exceptional circumstances but integrated into a broader strategy for early preventive diplomacy. “The next leader must act swiftly to halt conflicts before they escalate,” he said. “The world is too dangerous for a Secretary-General distracted by multiple issues.”
The challenges are compounded by the structure of the Security Council, where permanent members with veto power often hinder collective action. Data from 2016 to 2025 show 49 vetoes, compared to 19 between 2006 and 2015, reflecting a growing impasse in decision-making. This dynamic forces the Secretary-General to navigate a delicate balance between impartiality and the need to hold powerful states accountable. “Diplomacy requires tact, but neutrality without principles risks irrelevance,” Belhaj noted. “The next leader must be willing to privately or publicly warn governments whose actions threaten peace, without compromising the UN’s neutrality.”
The paper also critiques the UN’s expanding role in development, arguing that specialized institutions like the World Bank, IMF, and regional development banks are better equipped to manage financial and technical aspects. Belhaj advocates for a “subsidiarity test” to determine whether the Secretariat should lead initiatives or defer to existing institutions. “The Secretary-General’s unique strength lies in political legitimacy and mediation, not in overseeing every development project,” he said. “This approach would free up resources for conflict prevention, which remains the UN’s most critical mandate.”
Financial constraints further complicate the UN’s ability to act effectively. In June 2026, the General Assembly approved reforms to address a looming liquidity crisis, but the root cause—member states failing to meet financial obligations—remains unresolved. The Assembly President warned that delayed contributions have already led to cuts in peacekeeping operations, emphasizing the need for prioritization. “When resources are limited, priorities must be clear,” the President stated. “The next Secretary-General must embed institutional restraint into reform efforts, resisting mission inflation and focusing on core responsibilities.”
The call for a more assertive Secretary-General is not merely about expanding authority but about redefining the office’s role in a world where diplomatic failures carry greater consequences. The Belhaj paper argues that success should be measured by the UN’s ability to prevent crises, facilitate ceasefires, and protect civilians, rather than the number of initiatives launched. “The UN was not created to host conferences or coordinate development programs,” Belhaj said. “Its primary purpose is to uphold international peace and security. The next leader must ensure the office remains vital in preventing the next war.”
For African nations and the Global South, the selection of the next Secretary-General carries particular significance. Historically, the UN has served as a platform for developing countries to advocate for sovereignty, state equality, and international law. However, the organization’s expanding mandates risk undermining its credibility if it cannot deliver on core commitments. “A stronger Secretary-General would emphasize the consistent application of international law and prioritize civilian protection,” said a representative from the African Union. “This would reinforce the UN’s role as a mediator, not just a coordinator.”
The current selection process already reflects a shift toward valuing strategic leadership over administrative expertise. Candidates are being evaluated on their ability to navigate geopolitical complexities, leverage the Secretary-General’s unique authority, and make tough decisions in the face of resistance. “The next leader will face pressure from major powers, humanitarian organizations, and civil society,” said a UN official involved in the process. “Their ability to allocate political capital wisely will determine the office’s effectiveness.”
The stakes are high as the world grapples with overlapping crises, from climate change to food insecurity. Yet, the UN’s capacity to address these challenges is constrained by its institutional structure and financial limitations. Belhaj’s paper concludes that the next Secretary-General must strike a balance between firmness and moderation, ensuring the office remains a credible force for peace. “The answer isn’t just a more assertive Secretary-General, but one who is strategically oriented,” he said. “The focus must be on conflict prevention, institutional coordination, and defending the UN Charter’s role in a fractured global order.”
As the selection process nears its conclusion, the debate over the Secretary-General’s role reflects broader questions about the future of multilateralism. With conflicts in Gaza, Ukraine, Sudan, and the Sahel continuing to displace millions, the world is watching to see whether the next leader can restore the UN’s relevance. “The UN must stop the next war,” Belhaj asserted. “That requires a leader who is not only diplomatic but also willing to challenge the status quo when necessary.”
The path forward demands a recommitment to the UN’s founding principles. While the organization cannot single-handedly resolve global challenges, its ability to mediate, convene, and uphold international law remains critical. The next Secretary-General will inherit a world in flux, but their success will depend on their capacity to prioritize, innovate, and navigate the complex web of global politics with both courage and clarity.
The selection of the next UN Secretary-General is more than an institutional transition—it is a test of the organization’s ability to adapt to a rapidly changing world. As the process unfolds, the focus will remain on whether the office can reclaim its role as a force for peace, even as it grapples with the realities of a fragmented global order.
The urgency of the moment cannot be overstated. With conflicts escalating and multilateral trust eroding, the next Secretary-General must embody the political courage and strategic vision needed to steer the UN toward a more effective and focused future. The world is watching, and the stakes have never been higher.
The outcome of this selection will shape the UN’s trajectory for years to come. Whether the organization can rise to the challenge will depend on its ability to balance ambition with pragmatism, and to reaffirm its commitment to the principles that underpin its existence.
The path ahead is fraught with challenges, but the need for a more effective and focused UN Secretary-General is clear. As the world faces an uncertain future, the next leader must be prepared to act decisively, even when the odds are against them.