The United Nations is an international organization founded in 1945 after the Second World War to prevent another such conflict. It is the largest, most familiar, most internationally represented and most powerful intergovernmental organization in the world.

The World Bank is an international financial institution that provides financial and technical assistance to developing countries to promote economic growth and reduce poverty.

The World Trade Organization is an intergovernmental organization that regulates international trade. It was established in 1995 and is headquartered in Geneva, Switzerland.

The North Atlantic Treaty Organization (NATO) is a military alliance of North American and European countries that was established in 1949. Its purpose is to provide collective security against military attack.

The World Health Organization (WHO) is a specialized agency of the United Nations responsible for international public health. It was established in 1948 and is headquartered in Geneva, Switzerland.

The United Nations Children's Fund (UNICEF) is a United Nations agency that provides humanitarian and developmental aid to children and mothers in developing countries.

The International Red Cross and Red Crescent Movement is a global humanitarian network that provides emergency aid, disaster relief, and healthcare services during armed conflicts and natural disasters.

Médecins Sans Frontières (MSF) is an international humanitarian medical organization that provides emergency medical assistance to people affected by armed conflict, epidemics, natural disasters, and other crises.

The United Nations Development Programme (UNDP) is a United Nations agency that promotes sustainable development and poverty reduction.

The United Nations Environment Programme (UNEP) is a United Nations agency that coordinates global efforts to protect the environment.

The European Space Agency (ESA) is an intergovernmental organization of European states that cooperates on space exploration and research.

The Association of Southeast Asian Nations (ASEAN) is a regional intergovernmental organization that promotes economic cooperation and regional stability.

The International Atomic Energy Agency (IAEA) is an intergovernmental organization that promotes the safe and peaceful use of nuclear energy and works to prevent the spread of nuclear weapons.

The United Nations Office for Disarmament Affairs (UNODA) is a United Nations department that promotes disarmament and non-proliferation.

The United Nations Framework Convention on Climate Change (UNFCCC) is an international environmental treaty that aims to stabilize greenhouse gas concentrations in the atmosphere at a level that would prevent dangerous anthropogenic interference with the climate system.