TheUnited Nations (UN) is an intergovernmental organization to promoteinternational co-operation. A replacement for the ineffective League ofNations, the organization was established on 24 October 1945 after World War IIin order to prevent another such conflict. At its founding, the UN had 51member states; there are now 193. The headquarters of the United Nations is inManhattan, New York City, and experiences extraterritoriality. Further mainoffices are situated in Geneva, Nairobi, and Vienna. The organization isfinanced by assessed and voluntary contributions from its member states. Itsobjectives include maintaining international peace and security,, promotinghuman rights, fostering social and economic development, protecting theenvironment, and providing humanitarian aid in cases of famine, ,naturaldisaster, and armed conflict..