| Main Bodies |
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| General Assembly (GA) | New York, USA | 1945 | Deliberative, policymaking, representative; all 193 Member States; elects GA President yearly; universal representation |
| Security Council (UNSC) | New York, USA | 1945 | Maintenance of international peace & security; 15 Members (5 permanent + 10 non-permanent); can impose sanctions or authorize force; monthly rotating Presidency |
| Economic & Social Council (ECOSOC) | New York, USA | 1945 | Coordination & policy dialogue on economic, social & environmental issues; 54 Members; central platform for sustainable development; global reach |
| Trusteeship Council | New York, USA | 1945 | Supervision of Trust Territories; suspended in 1994; meets as required |
| International Court of Justice (ICJ) | The Hague, Netherlands | 1945 | Principal judicial organ; settles legal disputes between states; advisory opinions; global |
| Secretariat | New York, USA | 1945 | Administrative arm; led by Secretary-General; UN staff carry out daily work & peacekeeping; global presence |
| Funds & Programmes |
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| UNDP – United Nations Development Programme | New York, USA | – | Poverty eradication, reduce inequalities, build resilience; lead development agency; ~170 countries & territories |
| UNEP – United Nations Environment Programme | Nairobi, Kenya | 1972 | Environmental protection, sustainable development; catalyst, advocate, educator, facilitator; global |
| UNFPA – United Nations Population Fund | New York, USA | – | Reproductive health, population issues; promotes safe pregnancy & youth potential; global |
| UN-HABITAT – Human Settlements Programme | Nairobi, Kenya | – | Sustainable urban development, adequate shelter; socially & environmentally sustainable settlements; global |
| UNICEF – Children’s Fund | New York, USA | – | Child survival, rights, development; early childhood to adolescence; 190 countries & territories |
| WFP – World Food Programme | Rome, Italy | – | Eradication of hunger & malnutrition; humanitarian aid; ~100 million people in 88 countries annually |
| Specialized Agencies |
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| FAO – Food & Agriculture Organization | Rome, Italy | – | Fight hunger, improve nutrition; technical knowledge provider; global |
| ICAO – International Civil Aviation Organization | Montreal, Canada | – | Global aviation standards; safe & orderly air transport; 192 member states |
| IFAD – Int’l Fund for Agricultural Development | Rome, Italy | 1977 | Rural poverty reduction, agricultural development; support poor rural populations; developing countries |
| ILO – Int’l Labour Organization | Geneva, Switzerland | – | International labour standards; freedom of association, collective bargaining, equality; global |
| IMF – Int’l Monetary Fund | Washington, DC, USA | – | Global financial stability; loans & technical assistance; 74 countries |
| IMO – Int’l Maritime Organization | London, UK | – | Maritime safety, marine environment; safety, security, environmental standards; global |
| ITU – Int’l Telecommunication Union | Geneva, Switzerland | – | ICTs & global connectivity; universal & affordable communication; global |
| UNESCO – Educational, Scientific & Cultural Org. | Paris, France | – | Education, science, culture; teacher training, heritage protection; global |
| UNIDO – Industrial Development Org. | Vienna, Austria | – | Industrial development; poverty reduction, inclusive globalization, environmental sustainability; global |
| UN Tourism (UNWTO) | Madrid, Spain | – | Responsible & sustainable tourism; universally accessible tourism; global |
| UPU – Universal Postal Union | Bern, Switzerland | – | Global postal cooperation; ensures universal postal network; global |
| WHO – World Health Organization | Geneva, Switzerland | – | International public health; ensure highest level of health; global |
| WIPO – World Intellectual Property Org. | Geneva, Switzerland | – | Protection of intellectual property; implements 23 treaties; global |
| WMO – World Meteorological Organization | Geneva, Switzerland | – | Meteorological cooperation; weather data exchange; support aviation, shipping, agriculture, security; global |
| World Bank Group | Washington, DC, USA | – | Poverty reduction & development financing; IBRD, IDA, IFC, MIGA*, ICSID*; 100+ countries |
| *MIGA & ICSID | Part of World Bank Group | – | Investment guarantee & dispute settlement; investment protection; global |