section_path: Structure
section_name: Structure
paragraph_text: Structure
  
  The United Nations is part of the broader UN System, which includes an extensive network of institutions and entities. Central to the organization are five principal organs established by the UN Charter: the General Assembly, the Security Council, the Economic and Social Council, the International Court of Justice and the UN Secretariat. A sixth principal organ, the Trusteeship Council, suspended its operations on 1 November 1994 upon the independence of Palau; the last remaining UN trustee territory.
  
  Four of the five principal organs are located at the main UN Headquarters in New York City, while the International Court of Justice is seated in The Hague. Most other major agencies are based in the UN offices at Geneva, Vienna, and Nairobi, and additional UN institutions are located throughout the world. The six official languages of the UN, used in intergovernmental meetings and documents, are Arabic, Chinese, English, French, Russian and Spanish. On the basis of the Convention on the Privileges and Immunities of the United Nations, the UN and its agencies are immune from the laws of the countries where they operate, safeguarding the UN's impartiality with regard to host and member countries.
  
  Below the six organs are, in the words of the author Linda Fasulo, "an amazing collection of entities and organizations, some of which are actually older than the UN itself and operate with almost complete independence from it". These include specialized agencies, research and training institutions, programmes and funds and other UN entities.
  
  All organizations in the UN system obey the Noblemaire principle, which calls for salaries that will attract and retain citizens of countries where compensation is highest, and which ensures equal pay for work of equal value regardless of the employee's nationality. In practice, the International Civil Service Commission, which governs the conditions of UN personnel, takes reference to the highest-paying national civil service. Staff salaries are subject to an internal tax that is administered by the UN organizations.