History of the United Nations $8.5 million donation from John D. Rockefeller, Jr. The UN headquarters officially opened on January 9, 1951, although construction was not formally completed until October 9, 1952. Under special agreement with the United States, the UN enjoys certain diplomatic privileges and immunities, but generally the laws of New York City, New York State, and the United States apply. While the principal headquarters of the UN remain in New York City, major agencies base themselves in Geneva, The Hague, Vienna, Nairobi and elsewhere. The basic constitutional makeup of the United Nations has changed little, though vastly increased membership has altered the
United Nations Stabilisation Mission in Haiti United Nations Stabilisation Mission in Haiti The United Nations Stabilization Mission In Haiti (UNSTAMIH) (), also known as MINUSTAH, an acronym of the French name, was a United Nations peacekeeping mission in Haiti that was in operation from 2004 to 2017. The mission's military component was led by the Brazilian Army and the force commander is Brazilian. The force is composed of 2,366 military personnel and 2,533 police, supported by international civilian personnel, a local civilian staff and United Nations Volunteers. Following the 2010 Haiti earthquake, the United Nations reported that the headquarters of the mission in Port-au-Prince had collapsed