The United Nations was founded in 1945 after World War II to replace the League of Nations. It is an international organization whose stated aims are facilitating cooperation in international law, international security, economic development, social progress, human rights, and achievement of world peace. The philosophy behind its establishment is to stop wars between countries, and to provide a platform for dialogue. The members of the UN consist of 193 member states, including every internationally recognized sovereign state in the world but Vatican City. The UN is headed by a Secretary-General.
The organization has six principal organs:
Other prominent UN System agencies include the World Health Organization (WHO), the World Food Programme (WFP) and United Nations Children's Fund (UNICEF).
The United Nations Headquarters resides in international territory in New York City, with further main offices at Geneva, Nairobi, and Vienna. The organization is financed from assessed and voluntary contributions from its member states, and has six official languages: Arabic, Chinese, English, French, Russian, and Spanish