When and why was the United Nations founded?

The UN was founded on October 24, 1945, in San Francisco at the end of World War II. It replaced the failed League of Nations, with the central goal of preventing another world war through collective security and international cooperation. Fifty original member states signed the UN Charter.

Who are the P5 of the UN Security Council?

The five permanent members of the UN Security Council are the United States, the United Kingdom, France, Russia (which inherited the Soviet Union's seat in 1991), and China (the People's Republic of China replaced Taiwan in 1971). Each P5 member has the power to veto any substantive Security Council resolution.

What are the Sustainable Development Goals?

The Sustainable Development Goals (SDGs) are 17 global targets adopted by all UN member states in 2015 to be achieved by 2030. They cover poverty, hunger, health, education, gender equality, clean water, energy, work, infrastructure, inequality, cities, consumption, climate, oceans, land, peace, and partnerships.

How is the UN funded?

The UN is funded by member-state contributions. The regular budget assesses members based on national income and capacity to pay; the United States contributes about 22 percent, China about 15 percent, Japan about 8 percent. Peacekeeping is funded separately, also through assessed contributions. Specialized agencies have their own budgets.

What are the six principal organs of the UN?

The General Assembly (all members, one vote each), the Security Council (15 members, including the P5), the Economic and Social Council (54 members), the Trusteeship Council (suspended since 1994), the International Court of Justice (15 judges in The Hague), and the Secretariat (the UN's civil service, headed by the Secretary-General).

The United Nations: Origins, Structure, and How It Tries to Coordinate the World | Lessons

Learning Objectives

Explain the historical context for the UN's founding (1945) and how it differs from the failed League of Nations.
Identify the six principal organs of the UN and the role of each.
Describe the composition of the Security Council, the powers of the P5, and the consequences of the veto.
Distinguish between binding Security Council resolutions and non-binding General Assembly resolutions.
Summarize the 17 Sustainable Development Goals and identify two that a chosen country is making real progress on.

Key Concepts

The United Nations was created in 1945 by 50 founding states determined not to repeat the catastrophe of the League of Nations, which had failed to prevent World War II. The UN Charter, signed in San Francisco on June 26, 1945, took effect that October. Today the UN has 193 member states — effectively every recognized sovereign country except the Vatican City and a handful of disputed territories.

The UN's stated purposes are four: to maintain international peace and security, to develop friendly relations among nations, to achieve international cooperation in solving economic, social, cultural, and humanitarian problems, and to be a center for harmonizing the actions of nations. Its work happens through six principal organs created by the Charter, each with distinct authority.

The most powerful and most criticized organ is the Security Council. Of its 15 seats, five are permanent — held by the United States, United Kingdom, France, Russia, and China — and ten rotate among other member states for two-year terms. Each P5 member has a veto that can block any substantive resolution. The veto is the structural reason the Security Council cannot enforce action against a P5 country (or its close ally), and it has been wielded over 250 times.

In 2015 the General Assembly adopted the Sustainable Development Goals (SDGs) — 17 global targets to be reached by 2030, ranging from "no poverty" to "climate action" to "peace, justice, and strong institutions." Each country reports voluntarily on its own progress; the UN tracks progress on 232 indicators. The SDGs replaced the earlier (2000-2015) Millennium Development Goals.

The Six Principal Organs

General Assembly

All 193 members, one vote each. Adopts non-binding resolutions, sets the budget, elects the Secretary-General. Meets annually in New York.

Security Council

15 members (5 permanent + 10 rotating). The only organ that can authorize binding force or sanctions. P5 veto applies to substantive votes.

Economic and Social Council

54 members. Coordinates the UN's specialized economic, social, and humanitarian agencies; reviews national reports on the SDGs.

Trusteeship Council

Created to supervise decolonization of trust territories. Suspended in 1994 after Palau achieved independence; could be repurposed.

International Court of Justice

The UN's principal judicial organ. 15 judges sit in The Hague. Settles disputes between states (with their consent) and issues advisory opinions.

Secretariat

The UN's civil service. Roughly 37,000 staff worldwide. Headed by the Secretary-General, currently António Guterres (Portugal), serving since 2017.

Country Case Studies

United States

P5 host nation

The US hosts UN headquarters in New York and was one of the chief architects of the post-war system. It is the largest single contributor to the regular budget and one of two P5 members (with the UK) that has used the veto rarely in recent years.

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Russia

P5 inheritor

Russia inherited the Soviet Union's permanent Security Council seat in 1991 without a vote. It has used the veto more than any other P5 member, often blocking resolutions on Syria and Ukraine.

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Switzerland

Geneva — UN's second HQ

Switzerland was famously neutral and only joined the UN in 2002. Yet Geneva has long hosted the European headquarters of the UN, including the Human Rights Council, WHO, ILO, UNHCR, and UNCTAD.

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Kenya

UNEP and UN-Habitat host

Nairobi is the only UN headquarters in the Global South. It hosts UNEP (the UN Environment Programme) and UN-Habitat, reflecting an effort to balance the geography of the UN system.

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Discussion Questions

The Security Council's P5 veto reflects the geopolitical reality of 1945. What would a more representative Security Council look like, and what countries would have the strongest claim to a permanent seat today?
The General Assembly passes hundreds of resolutions each year, all non-binding. Why does the UN bother with non-binding resolutions, and what do they actually accomplish?
The UN has a budget roughly the size of the city of San Diego's. Is the organization underfunded for its mandate, or is the budget about right given how much it actually does?
Pick one Sustainable Development Goal. Identify three countries making real progress on it and one that is moving in the wrong direction. What explains the difference?
The UN failed to prevent the genocides in Rwanda (1994) and Srebrenica (1995). What changes to the system would have allowed it to act in those cases, and what new risks would those changes create?

Classroom Activities

45 min

Mock Security Council

Students roleplay the 15 current Security Council members debating a current crisis (Ukraine, Sudan, climate, etc.). Each P5 member can veto. The session ends with a recorded vote and a written reflection on what the veto changed.

60 min

SDG Country Report Card

Each student picks one country and one SDG. Using the UN SDG dashboard, they write a one-page report card on that country's progress, citing at least three indicators.

Vocabulary

UN Charter

The 1945 founding treaty of the United Nations, signed in San Francisco.

Security Council

The UN organ responsible for international peace and security, with five permanent and ten rotating members.

Veto Power

The right of any P5 member to block a substantive Security Council resolution.

General Assembly

The UN body where every member state holds one equal vote.

Peacekeeping

UN deployment of military and civilian personnel to monitor and enforce peace agreements.

Sustainable Development Goals

17 global targets adopted in 2015 to be reached by 2030, replacing the Millennium Development Goals.

Standards Alignment

Draft alignment — pending educator review.

Framework

NCSS Theme 6Power, Authority, and Governance — how international institutions structure power across borders.

NCSS Theme 9Global Connections — the role of intergovernmental organizations in addressing global challenges.

C3 D2.Civ.13.9-12Evaluate public policies in terms of intended and unintended outcomes, and related consequences.

C3 D2.Civ.14.9-12Analyze historical, contemporary, and emerging means of changing societies, promoting the common good, and protecting rights.

CCSS RH.11-12.7Integrate and evaluate multiple sources of information presented in diverse formats.

Discipline

Nat Std Civics III.E.1The place of law in American society — comparable framework for international law.

Nat Std Civics V.B.1Personal rights — how international human-rights frameworks complement domestic ones.

NCHS World History Era 9The 20th century since 1945 — including the founding and evolution of the UN system.

Exam Alignment

AP Comp Gov · Unit 5Political and Economic Changes — how supranational organizations affect national policy.

AP US Gov · Unit 2Interactions Among Branches — including treaty ratification and US-UN relations.

AP WH Modern · Unit 8Cold War and Decolonization (1900-present) — UN's role in the postwar order.

AP WH Modern · Topic 9.5Resistance to Globalization — including criticisms of UN-led globalization.

IB Global Politics SL/HLCore Unit 2: Human Rights, and Core Unit 4: Peace and Conflict — both center the UN system.

IB History HL Topic 14The Cold War: Superpower tensions and rivalries (1945-1991) — including UN inaction during proxy conflicts.

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