United Nations

The United Nations is the principal global intergovernmental organization, established in 1945 after the Second World War to help prevent another major international conflict and provide a framework for cooperation among states. Its founding purposes include maintaining international peace and security, developing friendly relations among nations, advancing human rights, coordinating humanitarian action, and encouraging economic and social progress. The organization operates under the UN Charter and is supported by a broad institutional system that includes political organs, funds, programmes, specialized agencies and affiliated bodies. The UN has 193 member states and works through universal and regional diplomatic forums. The General Assembly provides a deliberative platform in which all member states participate, while the Security Council bears primary responsibility for international peace and security. The Secretariat carries out the organization’s day-to-day administrative and diplomatic work under the Secretary-General. Other central institutions include the International Court of Justice, the Economic and Social Council and the Trusteeship Council, whose active functions have largely concluded. The UN system also includes bodies such as the World Health Organization, UNICEF, the United Nations Development Programme, the Office of the UN High Commissioner for Refugees and UN peacekeeping operations, although these entities have distinct mandates and governance arrangements. The organization’s work spans conflict prevention, mediation, peacekeeping, sanctions, disarmament, refugee protection, emergency relief, public health, food security, climate policy, gender equality, education and sustainable development. Its Universal Declaration of Human Rights and subsequent treaties have helped shape international human-rights norms, while its conventions and resolutions provide instruments for cooperation on issues ranging from refugees and oceans to international crime and climate change. The Sustainable Development Goals, adopted in 2015 as part of the 2030 Agenda, created a shared framework of 17 objectives addressing poverty, hunger, health, education, inequality, climate change and institutional resilience. The UN is not a world government and generally depends on member states for political authority, funding, personnel and implementation. The Security Council’s structure, including the permanent membership and veto power of five states, has been a continuing subject of debate. The organization has also faced criticism over failures to prevent or stop wars and mass atrocities, bureaucratic complexity, uneven accountability and the conduct of some peacekeeping personnel. Even with these limitations, the UN remains the most comprehensive standing forum for multilateral diplomacy and the most recognizable institutional brand associated with international cooperation. Its public identity is expressed through the UN emblem, flag, multilingual communications and issue-based campaigns. Rather than selling consumer products, the organization offers public goods and institutional services: diplomatic coordination, international standards, humanitarian assistance, development support, peace operations, research, data and public information. Its headquarters is in New York City, with major offices in Geneva, Vienna and Nairobi and operations in countries across the world.

The United Nations grew out of wartime efforts to create a stronger system of collective security than the League of Nations. During the Second World War, Allied governments used the term “United Nations” for their coalition and began discussing the principles of a postwar order. The 1942 Declaration by United Nations and the 1943 Moscow Declaration on general security helped establish the diplomatic basis for a new organization. At the 1944 Dumbarton Oaks discussions, the United States, United Kingdom, Soviet Union and China developed proposals for a general assembly, a security council, an international court and a secretariat. The 1945 Yalta arrangements addressed voting and membership questions, including the special position of the permanent members of the future Security Council. Representatives of 50 countries met in San Francisco in 1945 to negotiate the Charter of the United Nations. The Charter was signed on 26 June and entered into force on 24 October 1945, a date now observed as United Nations Day. Poland signed later and is counted among the original members. The organization initially had 51 members. Its headquarters was established in New York City, while major offices developed in Geneva, Vienna and Nairobi. The UN inherited some functions and ideas from the League of Nations but was designed with a more prominent security council and a closer connection to the principal wartime powers. In its first decades, the UN became a central venue for decolonization and the admission of newly independent states. The General Assembly expanded as membership grew across Africa, Asia, the Middle East and the Caribbean. The organization sponsored or supported international agreements on refugees, human rights, genocide, diplomatic relations, the law of the sea and other subjects. In 1948, the General Assembly adopted the Universal Declaration of Human Rights, a foundational statement that influenced later treaties and national constitutions. Cold War rivalry limited consensus in the Security Council, but the UN developed peacekeeping as a pragmatic instrument for monitoring ceasefires and reducing the risk of renewed conflict. Later missions became more complex, involving civilian protection, elections, institution-building and humanitarian coordination. UN agencies and programmes also expanded work on children, health, food, development, refugees and education. The organization became a major channel for technical assistance and international standard-setting even when great-power disagreement blocked stronger political action. After the Cold War, expectations for UN action increased. The organization supported peace processes, transitional administrations and humanitarian operations in numerous conflicts, while controversies over Somalia, Bosnia and Herzegovina and the 1994 genocide in Rwanda exposed serious limits in mandate design, political will and operational capacity. The Iraq sanctions regime and the Oil-for-Food Programme generated further debates about humanitarian consequences, oversight and accountability. In the twenty-first century, the UN confronted terrorism, civil wars, climate change, large-scale displacement, pandemics and renewed geopolitical rivalry. The Millennium Development Goals, adopted in 2000, focused international attention on poverty, health, education and gender. In 2015, member states replaced them with the broader 2030 Agenda and 17 Sustainable Development Goals. These goals linked social development with environmental sustainability, inclusive institutions and global partnership. The UN has since used the SDGs as a common language for governments, civil society, businesses and international organizations, supported by campaigns and public information efforts. The modern UN is a system rather than a single operational agency. Its funds, programmes, specialized agencies and related organizations have different legal identities, budgets and leadership, while the Secretariat and political organs provide the core institutional framework. The organization’s authority remains rooted in member-state consent, meaning that implementation depends heavily on national governments and the balance of international power. Debates over Security Council reform, financing, peacekeeping performance, human-rights enforcement and bureaucratic accountability continue. Nevertheless, the UN remains the only broadly universal forum combining security diplomacy, international law, humanitarian coordination, development policy and global public communication.

• 2020

  UN75 anniversary initiative

  [4]UN75: Shaping Our Future Togetherun.org

  The organization marked its seventy-fifth anniversary with a global consultation and communications initiative focused on future international cooperation.

• 2015

  2030 Agenda and Sustainable Development Goals adopted

  [2]United Nations Sustainable Development Goalssdgs.un.org

  Member states adopted the 2030 Agenda, including 17 Sustainable Development Goals and associated targets.

• 2000

  Millennium Development Goals adopted

  [9]Millennium Development Goals adoptedun.org

  Member states adopted eight goals to focus global development cooperation through 2015.

• 1948

  Universal Declaration of Human Rights adopted

  [8]Universal Declaration of Human Rights adoptedun.org

  The General Assembly adopted the Universal Declaration of Human Rights, which became a foundational reference for international human-rights law.

• 1945

  UN Charter enters into force

  [1]United Nations official historyun.org

  The United Nations formally came into existence on 24 October after the Charter received the required ratifications.

A universal platform for multilateral cooperation, conflict management, international standards and collective action on global challenges.

• Peace and security · 1948

  Peacekeeping operations

  UN peacekeeping missions deploy military, police and civilian personnel under mandates authorized by the Security Council or, in some cases, other UN bodies. Missions may monitor ceasefires, protect civilians, support political processes, facilitate elections, assist disarmament and help rebuild public institutions. Their authority, resources and results vary by mission, and they depend on member states for personnel and financing.

• Development framework · 2015

  Sustainable Development Goals

  The 17 Sustainable Development Goals form the central public framework of the UN 2030 Agenda. They cover poverty, hunger, health, education, gender equality, water, energy, decent work, infrastructure, inequality, cities, consumption, climate, oceans, land, peace and partnerships. The goals are implemented by states and partners rather than delivered as a conventional commercial product.

• Humanitarian services · 1945

  Humanitarian coordination

  UN humanitarian bodies coordinate emergency assistance for people affected by conflict, disasters, displacement and food insecurity. Activities can include protection, shelter, health, nutrition, logistics, cash assistance and appeals for funding. Delivery is often carried out with governments, local organizations and international non-governmental organizations.

• International law · 1945

  International conventions and standards

  Through negotiations, resolutions, treaties and technical bodies, the UN provides platforms for states to establish common rules and standards. These instruments address human rights, refugees, children, women, oceans, climate, transnational crime and other cross-border issues. Their legal effect differs depending on the instrument and whether states ratify or implement it.

• 2018

  Sexual exploitation and abuse concerns in peace operations

  Allegations involving sexual exploitation and abuse by personnel in UN-related operations continued to drive criticism, reporting reforms, victim-support measures and stronger prevention requirements.

  Source

• 2015

  Cholera in Haiti and UN accountability criticism

  The introduction and handling of cholera in Haiti by UN peacekeepers generated prolonged legal and ethical criticism, followed by an institutional shift toward acknowledging responsibility and supporting a response package.

  Source

• 1994

  Failure to prevent the Rwandan genocide

  The UN’s limited mandate and inadequate response during the 1994 genocide in Rwanda became one of the organization’s most serious institutional failures and led to later scrutiny of peacekeeping and civilian-protection responsibilities.

  Source

• 1990

  Oil-for-Food Programme controversy

  The UN-administered Iraq Oil-for-Food Programme later faced investigations and criticism concerning management, contracting, conflicts of interest and alleged corruption. The controversy prompted extensive review of oversight and accountability.

  Source

Read more

• 2020UN75: Shaping Our Future Together

  Global

  The UN75 initiative used a global conversation and anniversary communications platform to gather views about international cooperation and urgent challenges including climate change, displacement, inequality and technology.

  Outcome. The initiative positioned the anniversary as a public discussion about the future of multilateralism rather than only a historical celebration.

  Source
• 2017One for All

  Global

  A campaign created with Mekanism and the PVBLIC Foundation translated the 17 SDGs into accessible social and video content about poverty, climate change and injustice.

  Outcome. The initiative encouraged individuals to engage with the SDGs through social media, public-service content and participation.

  Source
• 2015Sustainable Development Goals global campaign

  Global

  The UN worked with media, advertising and entertainment partners to explain the newly adopted SDGs and build public support for their 2030 agenda.

  Outcome. The campaign used public-service advertising, cinema and digital channels to give the goals a broad international launch.

  Source
• 2010Unleash Your Creativity Against Poverty

  Europe

  UN regional information centres, UNDP and partner services organized a Europe-wide advertising competition to raise public awareness of poverty and the Millennium Development Goals.

  Outcome. The competition invited submissions from citizens and advertising professionals in 48 European countries and supported a common public-information effort.

  Source

• 2020

  Use the seventy-fifth anniversary to renew public engagementStrategy

  Background

  The anniversary occurred amid concerns about conflict, climate change, inequality, displacement and declining confidence in international cooperation.

  Action taken

  The UN launched UN75 consultations and communications inviting people and institutions to discuss the future of global cooperation.

  Aftermath

  The initiative broadened the anniversary into a global listening and public-awareness exercise.

  Source

• 2015

  Adopt the 2030 Agenda and SDGsStrategy

  Background

  The Millennium Development Goals were approaching their 2015 endpoint, while member states sought a broader framework combining social, economic and environmental priorities.

  Action taken

  Member states adopted 17 Sustainable Development Goals with targets intended to guide action through 2030.

  Aftermath

  The SDGs became the UN’s principal shared development framework and a major focus of public communications and partnerships.

  Source

• 1945

  Create a universal postwar organizationStrategy

  Background

  The Second World War demonstrated the limits of existing arrangements for collective security and intensified support for a permanent international institution.

  Action taken

  States negotiated and adopted the UN Charter, establishing political organs, a Secretariat and a framework for international cooperation.

  Aftermath

  The UN became the central universal forum for diplomacy, security deliberation and international standard-setting.

  Source

1. 1United Nations official historyun.org
2. 2United Nations Sustainable Development Goalssdgs.un.org
3. 3United Nations official websiteun.org
4. 4UN75: Shaping Our Future Togetherun.org
5. 5UN information centres launch European anti-poverty advertising competitionunis.unvienna.org
6. 6Adweek coverage of the global SDG cinema campaignadweek.com
7. 7Adweek coverage of One for Alladweek.com
8. 8Universal Declaration of Human Rights adoptedun.org
9. 9Millennium Development Goals adoptedun.org
10. 10Oil-for-Food Programme controversyun.org
11. 11Failure to prevent the Rwandan genocideun.org
12. 12Cholera in Haiti and UN accountability criticismun.org
13. 13Sexual exploitation and abuse concerns in peace operationsconduct.unmissions.org