The UN and Its Specialised Agencies: Organs, Headquarters and PYQs
Exam notes on the United Nations: the Charter of 1945, the six principal organs, the Security Council veto, and the specialised agencies with their headquarters.
By GK24 Editorial Team· Published · 5 min read

The United Nations is the international organisation general awareness papers return to every year, and the questions they build from it are of a settled kind: the year the Charter came into force, the six principal organs and where each of them sits, the composition of the Security Council, and the long list of specialised agencies with their headquarters and founding years. These notes set those facts out in the order a student can revise them, and keep the specialised agencies apart from the funds and programmes that examiners deliberately mix with them.
How the United Nations came into being
Three wartime steps led to the organisation. The Atlantic Charter of August 1941, agreed between Franklin D. Roosevelt and Winston Churchill, set out common war aims. The Declaration by United Nations, signed at Washington on 1 January 1942 by twenty-six nations including India, used the name for the first time. The San Francisco Conference, formally the United Nations Conference on International Organization, drafted the Charter, and fifty nations signed it on 26 June 1945; Poland signed later and is counted among the fifty-one founding members. The Charter came into force on 24 October 1945, observed every year as United Nations Day. It has a preamble and 111 articles arranged in 19 chapters. The new body replaced the League of Nations, created by the Treaty of Versailles in 1919 and formally dissolved in 1946. The headquarters stands in New York City on land given by John D. Rockefeller Jr., and membership has grown steadily from the original fifty-one, the newest member being South Sudan, admitted on 14 July 2011.
The six principal organs
| Organ | Seat | What to remember |
|---|---|---|
| General Assembly | New York | All members, one vote each; first session on 10 January 1946 in London |
| Security Council | New York | Fifteen members: five permanent with the veto, ten elected for two years |
| Economic and Social Council | New York | Fifty-four members elected for three years; links the specialised agencies to the UN |
| Trusteeship Council | New York | Suspended its work on 1 November 1994, after Palau became independent |
| International Court of Justice | The Hague | Fifteen judges for nine years; the only principal organ outside New York |
| Secretariat | New York | Headed by the Secretary-General, appointed by the General Assembly on the Security Council recommendation |
The five permanent members of the Security Council are China, France, Russia, the United Kingdom and the United States, and a negative vote by any one of them defeats a substantive resolution; this is the rule of great power unanimity, popularly the veto. The non-permanent seats were raised from six to ten by a Charter amendment that took effect in 1965, and they are shared among the regional groups. The Secretary-General holds a five-year renewable term: Trygve Lie of Norway was the first, Dag Hammarskjold of Sweden died in an air crash in 1961 and was given the Nobel Peace Prize posthumously that year, and U Thant of Burma was the first from Asia. The six official languages of the organisation are Arabic, Chinese, English, French, Russian and Spanish, of which English and French are the working languages of the Secretariat.
The specialised agencies and where they sit
A specialised agency is a separate international organisation with its own membership, budget and constitution, brought into relationship with the United Nations by an agreement with the Economic and Social Council under Article 63 of the Charter. The pairs below are the ones papers ask.
| Agency | Headquarters | Founded |
|---|---|---|
| International Telecommunication Union (ITU) | Geneva | 1865, the oldest of them all |
| Universal Postal Union (UPU) | Bern | 1874 |
| International Labour Organization (ILO) | Geneva | 1919, under the Treaty of Versailles |
| International Monetary Fund (IMF) | Washington D.C. | Agreed at Bretton Woods, 1944 |
| World Bank (IBRD) | Washington D.C. | Agreed at Bretton Woods, 1944 |
| International Civil Aviation Organization (ICAO) | Montreal | Chicago Convention, 1944 |
| Food and Agriculture Organization (FAO) | Rome | 16 October 1945 |
| UNESCO | Paris | Constitution of 1945, in force 1946 |
| World Health Organization (WHO) | Geneva | 7 April 1948 |
| World Meteorological Organization (WMO) | Geneva | 1950 |
| World Intellectual Property Organization (WIPO) | Geneva | 1967 |
| International Maritime Organization (IMO) | London | Convention of 1948 |
| UNIDO | Vienna | 1966 |
| IFAD | Rome | 1977 |
What is not a specialised agency
This is where marks are lost. The International Atomic Energy Agency, at Vienna, is an autonomous related organisation that reports to the General Assembly and the Security Council, not a specialised agency. The World Trade Organization, at Geneva, successor to the GATT from 1 January 1995, stands outside the United Nations system altogether. UNICEF, UNDP, UNEP, UNHCR, UNFPA and the World Food Programme are funds and programmes of the United Nations itself, created by the General Assembly and funded by voluntary contributions; UNEP, at Nairobi, was the first United Nations body headquartered in a developing country. Nobel Peace Prizes have gone to UNHCR in 1954 and again in 1981, to UNICEF in 1965, to the ILO in 1969, to the United Nations peacekeeping forces in 1988, to the United Nations and Kofi Annan in 2001, to the IAEA and Mohamed ElBaradei in 2005 and to the World Food Programme in 2020.
India and the United Nations
India signed the Declaration by United Nations in 1942 and the Charter at San Francisco in 1945, while still under British rule, and is therefore a founding member. Vijaya Lakshmi Pandit became the first woman President of the General Assembly when she presided over its eighth session in 1953. India is among the largest contributors of troops to United Nations peacekeeping, whose soldiers are known as Blue Helmets, and has served several two-year terms as a non-permanent member of the Security Council while pressing, with Brazil, Germany and Japan in the G4 group, for a permanent seat. The United Nations flag shows the world map in an azimuthal equidistant projection centred on the North Pole, framed by two olive branches, on a light blue field.
Exam Point of View
Examiners build four kinds of question from this topic. First, agency and headquarters pairs: FAO with Rome, WHO and ILO and ITU and WMO and WIPO with Geneva, UNESCO with Paris, ICAO with Montreal, IMO with London, UNIDO with Vienna, IMF and the World Bank with Washington. Second, the trap of what is and is not a specialised agency, where the IAEA, the WTO, UNICEF and UNEP are offered as options. Third, the numbers: six organs, fifteen Security Council members, five with the veto, ten non-permanent for two years, fifty-four in ECOSOC, fifteen judges of the ICJ for nine years, six official languages, 111 articles. Fourth, the dates: 24 October 1945, 26 June 1945, 1 January 1942, the first General Assembly session of 10 January 1946 in London and the suspension of the Trusteeship Council in 1994.
Important Facts
| Charter in force | 24 October 1945, observed as United Nations Day |
|---|---|
| Charter signed | 26 June 1945, San Francisco, by 50 nations; 51 founding members with Poland |
| Headquarters | New York City; the ICJ alone sits at The Hague |
| Principal organs | Six: General Assembly, Security Council, ECOSOC, Trusteeship Council, ICJ, Secretariat |
| Security Council | 15 members; 5 permanent (China, France, Russia, UK, USA) and 10 elected for two years |
| ECOSOC | 54 members, elected for three years |
| ICJ | 15 judges elected for nine years, at the Peace Palace, The Hague |
| Trusteeship Council | Suspended operations on 1 November 1994 after Palau became independent |
| Oldest specialised agency | International Telecommunication Union, 1865, Geneva |
| WHO | Geneva, 7 April 1948; World Health Day falls on 7 April |
| FAO | Rome, 16 October 1945; World Food Day falls on 16 October |
| Not specialised agencies | IAEA (Vienna), WTO (Geneva), UNICEF, UNDP, UNEP (Nairobi), UNHCR, WFP |
| Official languages | Arabic, Chinese, English, French, Russian, Spanish |
| First woman Assembly President | Vijaya Lakshmi Pandit of India, eighth session, 1953 |
Practice MCQs on this topic
How many organs are there in the United Nations?
- A.Five
- B.Six
- C.Seven
- D.Four
Show answer
Explanation
The correct answer is B, Six. The Charter of the United Nations establishes six principal organs: the General Assembly, in which every member state has one vote; the Security Council, which carries the primary responsibility for international peace and security; the Economic and Social Council; the Trusteeship Council; the International Court of Justice; and the Secretariat. Option A, five, is the number a candidate reaches by forgetting the Trusteeship Council, which suspended its work on 1 November 1994 after Palau became independent but was never abolished, since abolishing it would need an amendment to the Charter. Option C, seven, is wrong, and is usually reached by counting a fund or a programme such as UNICEF or UNDP as an organ; those bodies were created by the General Assembly and are not principal organs. Option D, four, is simply too few. Remember also that five of the six sit in New York and only the International Court of Justice sits at The Hague.
The Charter of the United Nations came into force on which date?
- A.26 June 1945
- B.24 October 1945
- C.1 January 1942
- D.10 January 1946
Show answer
Explanation
The correct answer is B, 24 October 1945. The Charter entered into force on that day, once the five permanent members of the Security Council and a majority of the other signatories had ratified it, and the day is observed every year as United Nations Day. Option A, 26 June 1945, is the day the Charter was signed at the close of the San Francisco Conference by fifty nations; Poland signed later and is counted among the fifty-one founding members, so the signing and the coming into force are four months apart and both are examined. Option C, 1 January 1942, is the date of the Declaration by United Nations, signed at Washington by twenty-six nations including India, on which the name was used for the first time. Option D, 10 January 1946, is the day the General Assembly held its first session, at Methodist Central Hall in London, before the move to New York.
The headquarters of UNESCO is located in which city?
- A.Geneva
- B.Rome
- C.Paris
- D.Vienna
Show answer
Explanation
The correct answer is C, Paris. The United Nations Educational, Scientific and Cultural Organization has had its headquarters in Paris since it began work; its constitution was adopted in November 1945 and came into force in November 1946, and it is the agency that maintains the World Heritage List. Option A, Geneva, is wrong for UNESCO but is the seat of a cluster of other agencies that papers pair with it, among them the World Health Organization, the International Labour Organization, the International Telecommunication Union, the World Meteorological Organization and the World Intellectual Property Organization. Option B, Rome, is the seat of the Food and Agriculture Organization, the International Fund for Agricultural Development and the World Food Programme, the three food bodies of the system. Option D, Vienna, is the seat of the United Nations Industrial Development Organization and of the International Atomic Energy Agency, which is a related organisation rather than a specialised agency.
Which is the only principal organ of the United Nations that does not sit in New York?
- A.Economic and Social Council
- B.Trusteeship Council
- C.International Court of Justice
- D.Secretariat
Show answer
Explanation
The correct answer is C, the International Court of Justice. The Court sits at the Peace Palace in The Hague in the Netherlands, where it took over the premises of the Permanent Court of International Justice of the League of Nations era. It has fifteen judges elected for nine-year terms by the General Assembly and the Security Council voting separately, and a third of the bench is renewed every three years. Option A is wrong; the Economic and Social Council, with fifty-four members elected for three years, meets at United Nations Headquarters in New York, though it also holds sessions at Geneva. Option B is wrong; the Trusteeship Council chamber is in the New York headquarters building, and the Council suspended its work there in 1994. Option D is wrong; the Secretariat is the New York headquarters itself, headed by the Secretary-General, even though the United Nations maintains large offices at Geneva, Vienna and Nairobi.
Which of the following is NOT a specialised agency of the United Nations?
- A.International Labour Organization
- B.International Atomic Energy Agency
- C.World Health Organization
- D.Universal Postal Union
Show answer
Explanation
The correct answer is B, the International Atomic Energy Agency. Set up in 1957 with its headquarters at Vienna, the IAEA is an autonomous intergovernmental organisation that reports to the General Assembly and, when nuclear safeguards are at issue, to the Security Council; the United Nations describes it as a related organisation, not a specialised agency, because it was not brought in by an agreement with the Economic and Social Council under Article 63. Option A is wrong as an answer because the International Labour Organization, founded in 1919 under the Treaty of Versailles and seated at Geneva, is indeed a specialised agency and was the first to be brought into the new system in 1946. Option C is wrong because the World Health Organization, which began on 7 April 1948, is a specialised agency. Option D is wrong because the Universal Postal Union of 1874, at Bern, is also one. The World Trade Organization is a still safer trap: it is outside the United Nations system entirely.
Founded in 1865 and now headquartered at Geneva, which is the oldest of the United Nations specialised agencies?
- A.Universal Postal Union
- B.International Telecommunication Union
- C.International Labour Organization
- D.World Meteorological Organization
Show answer
Explanation
The correct answer is B, the International Telecommunication Union. It was founded at Paris in 1865 as the International Telegraph Union to standardise telegraphy across borders, took its present name in 1932 as radio and telephony were added, moved to Geneva, and became a specialised agency of the United Nations in 1947; it now allocates the global radio spectrum and satellite orbits. Option A, the Universal Postal Union, is the second oldest, founded at Bern in 1874 by the Treaty of Bern so that a letter could travel between countries on a single payment, and it remains at Bern. Option C, the International Labour Organization, dates from 1919 and is the oldest body to come from the League of Nations period, but it is half a century younger than the ITU; it received the Nobel Peace Prize in 1969. Option D, the World Meteorological Organization, was created in 1950 from the older International Meteorological Organization of 1873.
World Food Day, observed on 16 October, marks the founding of which organisation?
- A.World Food Programme
- B.Food and Agriculture Organization
- C.International Fund for Agricultural Development
- D.World Health Organization
Show answer
Explanation
The correct answer is B, the Food and Agriculture Organization. The FAO was founded on 16 October 1945 at Quebec City, and World Food Day has been observed on that anniversary since 1981; the agency has its headquarters at Rome and runs the global work on hunger, nutrition and food statistics. Option A is wrong; the World Food Programme, also at Rome, is the food assistance arm of the United Nations, a programme rather than a specialised agency, and it received the Nobel Peace Prize in 2020. Option C is wrong; the International Fund for Agricultural Development, the third Rome-based food body, was set up in 1977 after the World Food Conference and lends for rural development, but no day is tied to its founding. Option D is wrong; the World Health Organization came into being on 7 April 1948, and that date is observed as World Health Day, a pairing examiners like to swap with this one.
How many non-permanent members does the United Nations Security Council have, and for what term are they elected?
- A.Ten, for two years
- B.Six, for two years
- C.Ten, for three years
- D.Fifteen, for five years
Show answer
Explanation
The correct answer is A, ten, for two years. The Security Council has fifteen members in all: five permanent members, namely China, France, Russia, the United Kingdom and the United States, and ten non-permanent members elected by the General Assembly for two-year terms, five of them retiring each year, with a retiring member not immediately re-eligible. Option B is wrong today but is the historical figure: the Council had six non-permanent members until a Charter amendment raised the number to ten with effect from 1965, so a question that mentions the original composition may use it. Option C is wrong because three years is the term of members of the Economic and Social Council, not of the Security Council. Option D confuses the total strength of the Council, fifteen, with the number of non-permanent seats, and no member of the Council is elected for five years; five years is the term of the Secretary-General.
The International Court of Justice consists of how many judges, and for what term are they elected?
- A.Nine judges for fifteen years
- B.Fifteen judges for nine years
- C.Fifteen judges for five years
- D.Twenty-one judges for nine years
Show answer
Explanation
The correct answer is B, fifteen judges for nine years. The judges of the International Court of Justice are elected by the General Assembly and the Security Council voting independently of each other, a candidate needing an absolute majority in both, and five seats fall vacant every three years so that the bench is renewed in thirds. No two judges may be nationals of the same state, and a retiring judge may be re-elected. Option A reverses the two numbers, the commonest error in this question, and candidates who remember only the pair nine and fifteen fall into it. Option C is wrong because five years is the term of the Secretary-General of the United Nations, not of a judge of the Court. Option D is wrong; twenty-one is not the strength of this Court, and the figure usually comes from confusing it with the International Tribunal for the Law of the Sea, which does have twenty-one members and sits at Hamburg.
The Trusteeship Council of the United Nations suspended its operations in 1994 after which territory became independent?
- A.Namibia
- B.Palau
- C.Nauru
- D.Western Samoa
Show answer
Explanation
The correct answer is B, Palau. Palau, in the Pacific, was the last of the eleven trust territories placed under the international trusteeship system, administered by the United States as part of the Trust Territory of the Pacific Islands; it became independent on 1 October 1994, and the Trusteeship Council suspended its operations on 1 November 1994, having completed its work. The Council remains a principal organ, because removing it would require an amendment to the Charter, but it meets only as occasion demands. Option A is wrong; Namibia became independent in 1990 and had been a mandate rather than an ordinary trust territory, its status the subject of long argument at the United Nations. Option C is wrong; Nauru, also a trust territory, became independent in 1968. Option D is wrong; Western Samoa, now Samoa, was the first trust territory to gain independence, in 1962.
Who was the first woman to be elected President of the United Nations General Assembly?
- A.Sarojini Naidu
- B.Vijaya Lakshmi Pandit
- C.Hansa Mehta
- D.Indira Gandhi
Show answer
Explanation
The correct answer is B, Vijaya Lakshmi Pandit. She presided over the eighth session of the General Assembly in 1953, the first woman to hold that office, and she had already led the Indian delegation to the United Nations in its earliest years; she was also the sister of Jawaharlal Nehru and later India envoy to Moscow, Washington and London. Option A is wrong; Sarojini Naidu was the first Indian woman to preside over the Indian National Congress, in 1925, and the first woman Governor of an Indian state, but she died in 1949 and never held office at the United Nations. Option C is wrong, though Hansa Mehta has a real United Nations distinction: as India delegate to the Commission on Human Rights she had the phrase all men changed to all human beings in Article 1 of the Universal Declaration. Option D is wrong; Indira Gandhi was Prime Minister of India and never President of the Assembly.
Which United Nations body has its headquarters at Nairobi in Kenya?
- A.UNESCO
- B.United Nations Environment Programme
- C.UNIDO
- D.WIPO
Show answer
Explanation
The correct answer is B, the United Nations Environment Programme. UNEP was created by the General Assembly in 1972 following the Stockholm Conference on the Human Environment, and its headquarters at Nairobi made it the first United Nations body to be seated in a developing country, a point examiners like. It is a programme of the United Nations and not a specialised agency, and it publishes the Emissions Gap and Adaptation Gap reports. Option A is wrong; UNESCO, the educational, scientific and cultural organisation, is at Paris. Option C is wrong; the United Nations Industrial Development Organization is at Vienna, in the same complex as the International Atomic Energy Agency. Option D is wrong; the World Intellectual Property Organization, which administers the Paris and Berne Conventions and the Patent Cooperation Treaty, is at Geneva. Nairobi also hosts UN-Habitat, the human settlements programme.
Frequently Asked Questions
How many principal organs does the United Nations have?
Six: the General Assembly, the Security Council, the Economic and Social Council, the Trusteeship Council, the International Court of Justice and the Secretariat. Five of them sit in New York; the International Court of Justice sits at the Peace Palace in The Hague. The Trusteeship Council still exists on paper but suspended its work on 1 November 1994.
Is the IAEA a specialised agency of the United Nations?
No. The International Atomic Energy Agency, set up in 1957 with its headquarters at Vienna, is an autonomous intergovernmental organisation that reports to the General Assembly and, where necessary, to the Security Council. It is described as a related organisation, not a specialised agency. The World Trade Organization is not part of the United Nations system at all.
Which is the oldest specialised agency of the United Nations?
The International Telecommunication Union, founded in 1865 at Paris as the International Telegraph Union and now seated at Geneva. The Universal Postal Union of 1874 comes next, and the International Labour Organization of 1919 is the oldest of those created in the twentieth century; all three became specialised agencies after 1945.
Why is 24 October observed as United Nations Day?
Because the Charter came into force on 24 October 1945, when it had been ratified by the five permanent members of the Security Council and a majority of the other signatories. The Charter had been signed four months earlier, on 26 June 1945, at San Francisco, so the signing date and the founding date are different and both are asked.
What is the veto power in the Security Council?
A substantive resolution of the Security Council needs nine affirmative votes out of fifteen and no negative vote from any of the five permanent members, China, France, Russia, the United Kingdom and the United States. A negative vote by even one of them defeats the resolution. The rule is called great power unanimity and does not apply to procedural matters.





