United Nations (UN) for UPSC: Organs and Reform

By Dooit UPSC expert · 3 November 2026 · 11 min read

The United Nations (UN) is an inter-governmental organisation founded on 24 October 1945 to keep international peace, build friendly relations between nations, and solve shared economic, social and humanitarian problems. It has 193 member states and works through six principal organs — the General Assembly, the Security Council, the Economic and Social Council (ECOSOC), the Trusteeship Council (now suspended), the International Court of Justice and the Secretariat. For UPSC it is a core GS Paper 2 topic (International Relations — important global institutions, their structure and mandate), and it links straight into India's foreign policy and the long-running demand for Security Council reform.

In thirty years of coaching I have seen the United Nations treated as "general knowledge" — the sort of topic candidates assume they already know and so never revise. Then a Prelims question asks which organ the ICJ is, or whether the Trusteeship Council still functions, or how many non-permanent members sit on the Security Council, and the easy marks evaporate. The UN is not hard. It is precise. Learn the six organs cleanly, fix the Security Council numbers in your head, understand why reform is stuck, and you have locked a banker topic across Prelims, Mains GS2 and the interview. Let us build it the right way.

Why the UN exists: from the League to the Charter

Start with the "why", because the examiner often frames questions around purpose rather than trivia. After the First World War, the world tried collective security through the League of Nations (1920). It failed — it had no teeth, major powers stayed out or walked away, and it could not stop the slide into the Second World War. The UN was built to fix those flaws.

The name "United Nations" was coined by US President Franklin Roosevelt and first used in the Declaration by United Nations of 1 January 1942, when 26 nations (India among them, though still under British rule) pledged to fight the Axis powers together. The organisation itself was created at the San Francisco Conference, where 50 countries signed the UN Charter on 26 June 1945. The Charter came into force on 24 October 1945 — now observed worldwide as United Nations Day — once the five major powers and a majority of signatories had ratified it. The original membership was 51 states (Poland signed later but is counted among the founders). India is a founding member.

Purposes and principles of the United Nations

Article 1 of the Charter sets out four broad purposes, and they double as a ready-made Mains intro:

• Maintain international peace and security — and take collective measures to prevent and remove threats to peace.
• Develop friendly relations among nations based on equal rights and self-determination of peoples.
• Achieve international cooperation in solving economic, social, cultural and humanitarian problems and in promoting human rights.
• Be a centre for harmonising the actions of nations towards these common ends.

Article 2 lays down the guiding principles: the sovereign equality of all members, settlement of disputes by peaceful means, refraining from the threat or use of force against any state, and — importantly for India's own diplomacy — non-intervention in matters essentially within the domestic jurisdiction of a state. That principle of non-interference is one India invokes repeatedly, so remember it.

The six principal organs at a glance

This is the spine of the whole topic. Memorise this table and half your UN questions are already answered.

One quick clarifier that trips people up: the ICJ sits at The Hague in the Netherlands, not in New York. It is the only principal organ not located in New York. The other five are headquartered at UN Headquarters in New York.

The General Assembly: one nation, one vote

The General Assembly is the UN's parliament of the world. All 193 members sit in it, each with one vote, regardless of size or wealth — Tuvalu and the United States are formally equal here. It meets in regular annual sessions (the high-level "general debate" each September is the one you see on the news) and can also hold special or emergency sessions.

On ordinary matters a simple majority decides; on important questions — peace and security recommendations, admitting or expelling members, budget — a two-thirds majority is required. Remember the key limit: Assembly resolutions are recommendatory, not legally binding on states. It elects the non-permanent members of the Security Council, admits new members (on the Council's recommendation), appoints the Secretary-General (again on the Council's recommendation) and approves the UN budget. One device worth knowing is the "Uniting for Peace" resolution of 1950: when the Security Council is paralysed by a veto, the Assembly can step in to recommend collective measures.

The Security Council: power, numbers and the veto

If there is one organ UPSC tests the hardest, it is the Security Council, because this is where real power — and real controversy — sits. It carries primary responsibility for international peace and security, and crucially, its decisions are binding on all members. It can impose sanctions, authorise peacekeeping missions, and sanction the use of force.

The veto is the single most important concept here. On any substantive question, a negative vote by even one permanent member defeats the resolution, no matter how many others support it. An abstention or absence by a P5 member, however, does not count as a veto — a subtle point examiners love. The ten non-permanent seats are distributed by region (Africa, Asia-Pacific, Latin America and the Caribbean, Western Europe and Others, and Eastern Europe), which is why a country campaigns for years to win one.

ECOSOC, ICJ, the Secretariat and the Trusteeship Council

The other four organs are lower-frequency but still examinable. Handle them in one clean sweep:

• ECOSOC (Economic and Social Council) — 54 members elected by the General Assembly for three-year terms. It is the central platform for debate on economic, social and environmental issues, and it coordinates the work of the specialised agencies and many funds and programmes. The Sustainable Development Goals (SDGs) fall within its orbit.
• ICJ (International Court of Justice) — the principal judicial organ, seated at The Hague, with 15 judges elected for nine-year terms by the General Assembly and the Security Council voting separately. It settles legal disputes between states and gives advisory opinions. Note: it hears states, not individuals — the court that tries individuals for war crimes is the separate International Criminal Court, which is not a UN organ. Do not confuse the two.
• Secretariat — the administrative engine, headed by the Secretary-General, the UN's chief administrative officer, appointed for a five-year renewable term. The current Secretary-General is António Guterres of Portugal, serving a second term that runs from January 2022 to December 2026.
• Trusteeship Council — set up to supervise 11 trust territories and guide them to self-rule. Having finished the job, it suspended operations in 1994 after Palau, the last trust territory, became independent. It still exists on paper but no longer meets regularly. This "does it still function?" angle is a favourite Prelims question — the answer is no, it is dormant.

Specialised agencies you must be able to place

Beyond the six organs sit the specialised agencies — autonomous bodies linked to the UN through ECOSOC. UPSC frequently asks you to match an agency to its headquarters or its mandate, so keep this ready:

A word of caution: UNICEF and UNHCR are UN funds and programmes, not specialised agencies, and UNICEF is headquartered in New York. Fine distinctions like these are exactly where a well-set Prelims question separates the serious candidate from the rest.

India and UN Security Council reform

This is the live, Mains-relevant heart of the topic. India's core argument is simple and powerful: the Security Council's permanent membership freezes the power equation of 1945. The victors of the Second World War still hold the vetoes, while entire continents — Africa and Latin America — have no permanent seat at all, and the world's most populous democracy sits outside. A body meant to represent the international community, India says, cannot keep ignoring the Global South.

India pursues reform mainly through the G4 — India, Brazil, Germany and Japan — four aspirants who back each other's claims. The G4 model proposes expanding the Council from 15 to around 25-26 members, adding new permanent and non-permanent seats, with greater representation for Africa. Four of the five permanent members have expressed support for India's candidature; China remains the main holdout. India also uses the L.69 group of developing nations and backs the African "Ezulwini Consensus" demand for African permanent seats.

Why, then, no reform after decades of talk? Because changing the Charter is deliberately hard. Any amendment must be adopted by a two-thirds majority of the General Assembly and ratified by two-thirds of members, including all five permanent members. In other words, the very countries whose privilege would be diluted hold a veto over reform. Opposing groups such as "Uniting for Consensus" (led by Italy, Pakistan and others) further block any single-country elevation. That structural lock is the honest answer a good Mains script gives — not just "there is a lack of political will".

How to study the UN for UPSC without drowning in detail

Here is the trap most aspirants fall into: they try to memorise every agency, every acronym, every date in one sitting, and remember none of it by exam day. Do it in layers instead. Layer one: the six organs, their seats and membership numbers — the table above, revised until automatic. Layer two: the Security Council in detail — the P5, the veto rule, India's eight terms. Layer three: the reform debate for Mains — G4, the Charter lock, the counter-groups. Layer four: specialised agencies, learned by linking each to its headquarters and current affairs (a WHO report, a UNESCO heritage listing).

Connect it to the news as you go. Every time a UN body is in the headlines — a Security Council vote, a General Assembly speech by India, a new SDG report — slot that item into the structure you have built. That is how static and current affairs fuse into answers that actually score. This is also precisely how we sequence International Relations inside Dooit: the static spine first, then a daily current-affairs feed that attaches to it, then targeted questions that force recall under time pressure. If you want to go deeper into India's groupings, read our guides on the Quad for UPSC and the BRICS grouping and its expansion, and pair this with our broader UPSC International Relations preparation strategy.

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