'The World Is Bigger Than Five': UN Security Council Reform and COP31 Climate Diplomacy

Why It Matters

The question is whether the UN Security Council, designed in 1945, can remain legitimate and effective when its five permanent members hold a veto over decisions that affect all 193 UN member states. Türkiye answers with the phrase The world is bigger than five (Dünya beşten büyüktür): reform should widen representation and accountability rather than add more permanent privileges. Ankara links this argument to its climate diplomacy, notably the Zero Waste initiative and its role as host of COP31, because both rest on the claim that global problems require inclusive institutions.

Background

How the Council is built

The Security Council has 15 members: five permanent (China, France, Russia, the United Kingdom and the United States) and ten elected non-permanent members serving two-year terms. Article 27(3) of the UN Charter gives each permanent member a veto over substantive decisions. Article 24 states that members confer on the Council primary responsibility for international peace and security, acting on their behalf.

Timeline of reform efforts

Why amendment is so hard

Article 108 requires a two-thirds vote in the General Assembly and ratification by two-thirds of member states, including all five permanent members. In practice every permanent member holds a second veto over reform itself. The IGN has met for more than a decade and a half without producing an agreed negotiating text. Sessions typically end with a procedural rollover.

Climate diplomacy: the facts

• Zero Waste: Launched in Türkiye in 2017 under the leadership of Emine Erdoğan. In 2020 UN Secretary-General António Guterres established a High-Level Advisory Board on Zero Waste, chaired by her. In December 2022 the General Assembly adopted resolution 77/161, proclaiming 30 March as the International Day of Zero Waste.
• Paris Agreement: Türkiye's parliament (TBMM) approved the agreement in October 2021, and Ankara announced a 2053 net-zero target. Türkiye updated its national contribution in 2023 and adopted a national Climate Law in 2025 that provides for an emissions trading system.
• COP31: At COP30 in Belém (November 2025), parties accepted a compromise under which Türkiye hosts COP31 in Antalya in November 2026, while Australia holds a negotiating-presidency role and a pre-COP takes place in the Pacific. Readers should check the UNFCCC secretariat for the exact allocation of roles.

The Council has also been a climate arena. In December 2021 a draft resolution linking climate change and security won 12 votes but failed after a Russian veto, with India voting against and China abstaining.

Key Players & Positions

Five reform camps shape the debate. Each speaks through its own official documents and General Assembly statements.

What the permanent members say

• The United States has publicly supported expanding both categories of seats, including permanent seats for African states, without extending the veto to new members.
• France and the United Kingdom support enlargement, including new permanent members, and France promotes voluntary veto restraint in atrocity situations.
• Russia has voiced support for greater representation of developing countries and for certain candidacies, but opposes limits on the veto.
• China supports a larger role for developing countries, especially Africa, while remaining cautious about permanent expansion.

The obstacle: rival claims

Most reform blocs are shaped by regional rivalries. Italy contests Germany's claim, Pakistan contests India's, Mexico and Argentina contest Brazil's, and the Republic of Korea contests Japan's. In Africa, several large states compete for any permanent seat. The G4 argue that UfC's elected-seat model entrenches the status quo, while UfC members respond that permanent seats would create new inequalities and weaken accountability.

Source Comparison

International commentary and Turkish official sources agree that the Council is stuck, but disagree on the remedy and on who is responsible.

Readers should note that Türkiye is a party to the debate and a Council candidate, so its arguments serve its own interests as well as general principles. That is also true of the G4, the African Union and the permanent members. Our sourcing approach is described in Editorial Principles and Primary Source Standards, and disputed claims about Türkiye are tested in Fact Check Arena.

What to watch

• Whether the IGN produces a negotiating text rather than a rollover.
• Implementation of the 2024 Pact for the Future language on Africa's representation.
• Whether General Assembly debates after vetoes change the conduct of permanent members.
• The final COP31 programme in Antalya and how Zero Waste is integrated into it.

Key Terms & Related Guides

• Veto (Article 27(3)): the power of a permanent member to block any substantive Council decision.
• IGN: Intergovernmental Negotiations on Council reform, held in the General Assembly since 2009.
• G4: Brazil, Germany, India and Japan, who seek permanent seats.
• Uniting for Consensus (UfC): a group of states, including Türkiye, opposing new permanent seats.
• Ezulwini Consensus: the African Union's 2005 common position on Council reform.
• Zero Waste: a Türkiye-led initiative that earned a UN International Day on 30 March.
• COP31: the 31st UN climate conference, to be hosted in Antalya, Türkiye, in November 2026.

Related guides: Türkiye's Gaza and Palestine Policy, Montreux Convention, the Black Sea and Türkiye's Russia–Ukraine Mediation, Counter-Terrorism at the Source, About Diplomacy Arena, and the Diplomacy Arena home page.

Prepared by the Diplomacy Arena Editorial Team.

Perspective Note: Diplomacy Arena presents Türkiye's official perspective and legal theses alongside the counter-arguments of other parties, and clearly labels analysis as distinct from reporting. Claims are attributed to primary sources such as treaty texts, UN documents, official statements and archival records, with links provided wherever available. Sections marked 'Türkiye's Position' reflect official Turkish policy as stated by Turkish government sources.

Cross-Publication Dossiers & Sister Desk Perspectives

For complementary primary-source analysis across our specialist editorial network, consult:

• The Nations Dialogue: 'The World Is Bigger Than Five': Türkiye's UN Security Council Reform Case and COP31 Climate Diplomacy — Understand Türkiye's 'The world is bigger than five' doctrine, the P5, L.69 and Uniting for Consensus positions, plus Zero Waste and COP31 climate diplomacy.
• Index of Nations: 'The World Is Bigger Than Five': Türkiye's UN Security Council Reform Vision and COP31 Climate Diplomacy — How the UN Security Council and veto work, what G4, Uniting for Consensus and Africa propose, and Türkiye's 'world is bigger than five' thesis and COP31 role.
• The Global Anatomy: 'The World Is Bigger Than Five': Türkiye's UN Security Council Reform Vision and COP31 Climate Diplomacy — Türkiye's 'The world is bigger than five' doctrine on UN Security Council reform, rival models, Zero Waste and the COP31 presidency, explained with sources.