The United Nations was established in 1945 with the primary objective of maintaining international peace and security. This is reflected in its Charter, which states that the UN's purpose is to 'save succeeding generations from the scourge of war, which twice in our lifetime has brought untold sorrow to mankind.'

The United Nations Framework Convention on Climate Change (UNFCCC) is the international organization responsible for coordinating global efforts to address climate change. It was established in 1992 and has 197 member states.

The International Monetary Fund (IMF) is an international organization that provides financial assistance to countries facing economic crises. It also promotes international trade and economic growth, regulates the global financial system, and provides technical assistance to countries in developing their economies.

The United Nations Human Rights Council is the international organization responsible for promoting and protecting human rights around the world. It was established in 2006 and has 47 member states.

The World Trade Organization (WTO) is an international organization that sets rules for international trade. It also resolves trade disputes between countries, promotes trade liberalization, and provides technical assistance to countries in developing their trade capacity.

The United Nations High Commissioner for Refugees (UNHCR) is the international organization responsible for coordinating global efforts to address the issue of refugees and displaced persons. It was established in 1950 and has a mandate to protect refugees, provide humanitarian assistance, and promote durable solutions to refugee problems.

The World Health Organization (WHO) is an international organization that promotes universal health coverage. It also provides technical assistance to countries in developing their health systems, coordinates global efforts to address health emergencies, and sets standards for global health.

The International Atomic Energy Agency (IAEA) is the international organization responsible for coordinating global efforts to address the issue of nuclear disarmament and non-proliferation. It was established in 1957 and has a mandate to promote the safe and peaceful use of nuclear energy.

The United Nations Development Programme (UNDP) is an international organization that coordinates global efforts to achieve the Sustainable Development Goals (SDGs). It also provides financial assistance to countries for development projects, promotes capacity building in developing countries, and provides technical assistance to countries in developing their national development plans.

The United Nations Educational, Scientific and Cultural Organization (UNESCO) is an international organization that promotes international cooperation in the field of education, science, and culture. It was established in 1945 and has a mandate to contribute to the building of peace, security, stability, and well-being by promoting international collaboration through education, science, culture, and communication.

The World Bank is an international organization that provides financial assistance to developing countries. It also promotes private sector development, provides technical assistance to countries in developing their economies, and promotes good governance and accountability.

The Food and Agriculture Organization of the United Nations (FAO) is an international organization that promotes international cooperation in the field of agriculture and food security. It was established in 1945 and has a mandate to raise levels of nutrition, improve agricultural productivity, and better the lives of rural populations.

The International Labour Organization (ILO) is an international organization that sets international labour standards. It also promotes social dialogue and tripartism, provides technical assistance to countries in developing their labour laws and policies, and promotes the rights of workers and employers.

The International Civil Aviation Organization (ICAO) is an international organization that promotes international cooperation in the field of civil aviation. It was established in 1944 and has a mandate to ensure the safe and orderly growth of international civil aviation.

The World Meteorological Organization (WMO) is an international organization that promotes international cooperation in the field of meteorology and hydrology. It was established in 1950 and has a mandate to promote the exchange of meteorological and hydrological data, coordinate global efforts to address climate change, and promote the development of meteorological and hydrological services.