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 Support Mission in Libya of September 2018. The headquarters of the mission is in Tunis (Tunisia). UNSCR 2009 (2011) said: Ian Martin was the Special Representative of the Secretary-General and Head of the UNSMIL from 11 September 2011 until 17 October 2012 when he was succeeded by Tarek Mitri. On 14 August 2014, Tarek Mitri was succeeded by Bernardino León. United Nations Support Mission in Libya The United Nations Support Mission in Libya (UNSMIL) is a United Nations advanced mission in Libya, in the aftermath of the Libyan Civil War. UNSMIL is not a military mission, but a political one led by the Department