Next UN Chief Faces Daunting Reform Task in Fractured World

On the first day of January, the United Nations will hand its leadership to someone stepping into one of the world's most constrained jobs. The organization they inherit is eighty-one years old, still governed by the five nations that won World War II, and increasingly sidelined from the very conflicts it was designed to prevent. The wars in Iran, Ukraine, and Gaza have unfolded largely without meaningful UN involvement. Meanwhile, the organization bleeds money—chiefly because the United States owes it billions of dollars—forcing cuts so deep that humanitarian and development programs, the areas where the UN still matters most, are shrinking.

Outgoing Secretary-General Antonio Guterres used his final address to the General Assembly to name what his successor will need to do. "The world does not need a weaker United Nations," he told the gathered leaders. "It needs a U.N. strong enough to face the world as it is, and determined enough to build the world as it should." He then posed a series of questions that amount to a job description: Will the next chief uphold law before impunity becomes routine? End wars before they consume generations? Tackle inequality before societies fracture? Push climate action before tipping points arrive? Govern artificial intelligence before it governs humanity? These are not rhetorical flourishes. They are the actual terrain the incoming secretary-general will have to navigate.

The task ahead is, by any measure, monumental. Kizito Byenkya, advocacy director at the Open Society Institute, described it plainly: the new UN chief will face "the most monumental task that the U.N. has faced in decades." The organization is undergoing a critical reform process it has not attempted in a very long time. Hundreds of outdated mandates clutter the bureaucracy, ordering the Secretariat to produce reports that no one reads. Programs and agencies are being consolidated. The financial crisis has forced difficult choices about what the UN can actually do.

But there is a deeper problem, one that touches the UN's legitimacy itself. The Security Council—the organization's most powerful body—remains controlled by the five World War II victors: the United States, Russia, China, Britain, and France. Each holds veto power. Africa, home to 1.5 billion people, has no permanent seat on the council. Neither does Latin America. Neither do the small island nations whose very existence is threatened by rising seas. Every UN member nation says the council should reflect the twenty-first century world, yet decades of negotiation have produced no reform. The national interests diverge too sharply. The structural problem remains unsolved.

Ghana's President John Mahama put the stakes plainly during the recent high-level week at the UN. "Security Council reform is not a favor to Africa," he told world leaders. "It is an imperative for the legitimacy, credibility, and survival of the United Nations." He also named what may be the deepest challenge facing the incoming secretary-general: the world's "intense fragmentation, deepening inequality and eroded trust in our multilateral system." Nations are drifting toward unilateralism. The global order is breaking down. The UN Charter, which opens with a commitment to prevent another repetition of the twentieth century's two world wars, is being treated as quaint rather than binding.

There is also the question of what role the secretary-general should actually play. Byenkya pointed to Kofi Annan, the late secretary-general who became directly involved in conflicts and earned a reputation as a skilled mediator and negotiator. "In the time of Kofi Annan, he was center to all," Byenkya said, noting that in recent years—Gaza, Sudan, Ukraine—the UN's role has been marginal. The incoming chief will face pressure from all sides to act as a general, to mediate, to be present at the table where decisions are made. Yet the structural constraints that have sidelined the organization will not disappear simply because a new person takes the job.

Reform, in theory, sounds necessary and obvious. In practice, it is far harder. Every leader who spoke during the recent General Assembly session called for reform. But when the conversation turns to actual changes—particularly to the Security Council—the differences become impossible to bridge. Nations want the UN to change, but not in ways that diminish their own power. The incoming secretary-general will inherit an institution that everyone agrees needs to be modernized, yet no one can agree on how.