For decades, the structure of the United Nations Security Council has been criticised as a relic of the world that existed in 1945. Now, the long-running campaign for UN Security Council reform is gathering fresh momentum, with major regional blocs and emerging powers pressing the General Assembly to finally modernise the body that holds primary responsibility for international peace and security.
Why the Council looks out of date
The Security Council has fifteen members, but power within it is concentrated among five permanent members that hold the veto: the United States, China, Russia, the United Kingdom and France. That configuration reflects the balance of power immediately after the Second World War, not the world of today.
Critics point out that entire regions are absent from the permanent tier. Africa, home to more than a billion people and the focus of much of the Council's agenda, has no permanent seat. Major economies and populous democracies that have risen to global prominence over the past eighty years remain on the outside. The mismatch between the Council's composition and the modern distribution of population, economic weight and diplomatic influence is at the heart of the reform case.
What the reformers want
Several distinct proposals are on the table. The African Union, through what is known as the Ezulwini Consensus, has called for the Council to be enlarged and for Africa to be granted permanent seats with full rights, alongside additional non-permanent seats. African leaders argue that correcting the continent's exclusion is a matter of basic fairness.
A separate grouping of aspirant powers, sometimes referred to as the G4, has long argued for expansion that would add new permanent members drawn from several regions, including Africa, Asia and the Pacific, and Latin America. Their case rests on the argument that countries shouldering significant global responsibilities deserve a permanent voice in decisions on war and peace.
The veto question
Running alongside the debate over membership is a parallel argument about the veto itself. Many member states regard the veto as the single greatest obstacle to effective Council action, particularly when it is used to block responses to mass atrocities.
An initiative championed by France and Mexico has sought voluntary restraint, asking permanent members to refrain from using the veto in situations involving genocide, crimes against humanity and large-scale war crimes. A substantial number of states have expressed support for the idea, though it relies on voluntary commitment rather than binding obligation.
Why reform is so hard
The central difficulty is structural. Changing the Council requires amending the UN Charter, and that process is deliberately demanding. It needs the support of a two-thirds majority in the General Assembly, ratification by two-thirds of all member states, and crucially the approval of all five current permanent members.
That last requirement effectively gives each permanent member a veto over reform that might dilute its own privileged position. The result has been years of intergovernmental negotiations that have clarified the competing positions without producing a breakthrough. Disagreements among the reformers themselves, over which countries and regions should benefit, add a further layer of complexity.
The stakes for the UN's credibility
Supporters of reform warn that the cost of inaction is the Council's own legitimacy. When a body charged with maintaining international peace is seen as unrepresentative or paralysed, member states and publics may increasingly look elsewhere or simply lose faith in multilateral institutions.
The General Assembly has been urged to take a leading role in driving change, on the argument that the broader membership cannot wait indefinitely for the permanent members to volunteer reforms that would constrain their own power.
A long road still ahead
Despite the renewed energy, no one expects an overnight transformation. The combination of high procedural hurdles and entrenched interests means that meaningful change, if it comes, is likely to be incremental. Yet the persistence of the debate, and the growing chorus of voices demanding a more representative Council, suggests the question of reform is not going away. The pressure is building, even if the path to actually rewriting the rules remains steep.