List of specialized agencies of the United Nations in the context of "Universal Postal Union"

The United Nations (UN) is a global intergovernmental organization established by the signing of the UN Charter on 26 June 1945 with the articulated mission of maintaining international peace and security, to develop friendly relations among states, to promote international cooperation, and to serve as a centre for harmonizing the actions of states in achieving those goals.

The United Nations headquarters is located in New York City, with several other offices located in Geneva, Nairobi, Vienna, and The Hague. The UN comprises six principal organizations: the General Assembly, the Security Council, the Economic and Social Council, the International Court of Justice, the Secretariat, and the Trusteeship Council which, together with several specialized agencies and related agencies, make up the United Nations System. There are in total 193 member states and 2 observer states.

The United Nations Economic and Social Council (ECOSOC) is one of six principal organs of the United Nations (UN), responsible for coordinating the economic and social fields of the organization, specifically in regards to the fifteen specialized agencies, the eight functional commissions, and the five regional commissions under its jurisdiction.

ECOSOC serves as the central forum for discussing international economic and social issues, and formulating policy recommendations addressed to member states and the United Nations System. It has a rotating membership of 54 countries, and over 1,600 nongovernmental organizations have consultative status with the Council to participate in the work of the United Nations.

The United Nations Educational, Scientific and Cultural Organization (UNESCO /juːˈnɛskoʊ/) is a specialized agency of the United Nations (UN) with the aim of promoting world peace and security through international cooperation in education, arts, sciences and culture. It has 194 member states and 12 associate members, as well as partners in the non-governmental, intergovernmental and private sector. Headquartered in Paris, France, UNESCO has 53 regional field offices and 199 national commissions.

UNESCO was founded in 1945 as the successor to the League of Nations' International Committee on Intellectual Cooperation. UNESCO's founding mission, which was shaped by the events of World War II, is to advance peace, sustainable development and human rights by facilitating collaboration and dialogue among nations. It pursues this objective through five major programme areas: education, natural sciences, social/human sciences, culture and communication/information. UNESCO sponsors projects that improve literacy, provide technical training and education, advance science, protect independent media and press freedom, preserve regional and cultural history, and promote cultural diversity. The organization prominently helps establish and secure World Heritage Sites of cultural and natural importance.

The International Court of Justice (ICJ; French: Cour internationale de justice, CIJ), or colloquially the World Court, is the principal judicial organ of the United Nations (UN). It settles legal disputes submitted to it by states and provides advisory opinions on legal questions referred to it by other UN organs and specialized agencies. The ICJ is the only international court that adjudicates general disputes between countries, with its rulings and opinions serving as primary sources of international law. It is one of the six principal organs of the United Nations.

Established in June 1945 by the Charter of the United Nations, the Court began work in April 1946. It is the successor to the Permanent Court of International Justice (PCIJ), which was established by the League of Nations in 1920. Its founding statute is an integral part of the UN Charter and draws heavily from that of its predecessor. All UN member states are automatically parties to the ICJ Statute. However, the Court's jurisdiction in contentious cases is founded upon the consent of the states party to a dispute, which may be given through special agreements or declarations accepting the Court's compulsory jurisdiction.

The United Nations System consists of the United Nations' six principal bodies (the General Assembly, Security Council, Economic and Social Council (ECOSOC), Trusteeship Council, International Court of Justice (ICJ), and the United Nations Secretariat), the specialized agencies and related organizations. The UN System includes subsidiary bodies such as the separately administered funds and programmes, research and training institutes, and other subsidiary entities. Some of these organizations predate the founding of the United Nations in 1945 and were inherited after the dissolution of the League of Nations.

The executive heads of some of the United Nations System organizations, and the World Trade Organization, which is not formally part of the United Nations System, have seats on the United Nations System Chief Executives' Board for Coordination (CEB). This body, chaired by the secretary-general of the United Nations, meets twice a year to co-ordinate the work of the organizations of the United Nations System.

The United Nations General Assembly has granted observer status to international organizations, entities, and non-member states, to enable them to participate in the work of the United Nations General Assembly, though with limitations. The General Assembly determines the privileges it will grant to each observer, beyond those laid down in a 1986 Conference on treaties between states and international organizations. Exceptionally, the European Union (EU) was in 2011 granted the right to speak in debates, to submit proposals and amendments, the right of reply, to raise points of order and to circulate documents, etc. As of May 2011, the EU is the only international organization to hold these enhanced rights, which has been likened to the rights of full membership, short of the right to vote.

Observer status may be granted by a United Nations General Assembly resolution. The status of a permanent observer is based purely on practice of the General Assembly, and there are no provisions for it in the United Nations Charter. The practice is to distinguish between state and non-state observers. Non-member states are members of one or more specialized agencies, and can apply for permanent observer state status. Non-state observers are the international organizations and other entities.

The World Health Organization (WHO) is a specialized agency of the United Nations which coordinates responses to international public health issues and emergencies. It is headquartered in Geneva, Switzerland, and has six regional offices and 150 field offices worldwide. Only sovereign states are eligible to join, and it is the largest intergovernmental health organization at the international level.

The WHO's purpose is to achieve the highest possible level of health for all the world's people, defining health as "a state of complete physical, mental and social well-being and not merely the absence of disease or infirmity." The main functions of the World Health Organization include promoting the control of epidemic and endemic diseases; providing and improving the teaching and training in public health, the medical treatment of disease, and related matters; and promoting the establishment of international standards for biological products.

The International Labour Organization (ILO) is a United Nations agency whose mandate is to advance social and economic justice by setting international labour standards. Founded in October 1919 under the League of Nations, it is one of the first and oldest specialized agencies of the UN. The ILO has 187 member states: 186 out of 193 UN member states plus the Cook Islands. It is headquartered in Geneva, Switzerland, with around 40 field offices around the world, and employs some 3,381 staff across 107 nations, of whom 1,698 work in technical cooperation programmes and projects.

The ILO's standards are aimed at ensuring accessible, productive, and sustainable work worldwide in conditions of freedom, equity, security and dignity. They are set forth in 189 conventions and treaties, of which eight are classified as fundamental according to the 1998 Declaration on Fundamental Principles and Rights at Work; together they protect freedom of association and the effective recognition of the right to collective bargaining, the elimination of forced or compulsory labour, the abolition of child labour, and the elimination of discrimination in respect of employment and occupation. The ILO is a major contributor to international labour law.