Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. UN Chief Warns Attack Could Spark Civil War in Ivory Coast VOA News 31 December 2010 Supporters of opposition leader Alassane Ouattara, make their feelings known, as they sing at an event at a hotel in Abidjan, Ivory Coast, 30 Dec 2010 Photo: AP Supporters of opposition leader Alassane Ouattara, make their feelings known, as they sing at an event at a hotel in Abidjan, Ivory Coast, 30 Dec 2010 U.N. Secretary-General Ban Ki-moon has warned supporters of Ivory Coast's incumbent leader, Laurent Gbagbo, that an attack on his political rival could reignite civil war. A spokesman for Mr. Ban Thursday said the secretary-general is deeply alarmed by calls to attack the hotel where Alassane Ouattara is working under U.N. protection. The United Nations recognizes Mr. Ouattara as the winner of last month's presidential run-off election, but Mr. Gbagbo disputes the results. Mr. Ban's spokesman said U.N. peacekeepers are authorized to use all necessary means to protect its personnel and government officials at the hotel. British Foreign Secretary William Hague told the BBC Friday that Britain would support a U.N.-sanctioned military intervention if negotiations cannot convince Mr. Gbagbo to step down. West African leaders have, for now, decided against military intervention as envoys for the regional bloc ECOWAS plan further negotiations with Mr. Gbagbo.  The presidents of Benin, Cape Verde and Sierra Leone say they will return to Ivory Coast next week to urge Mr. Gbagbo to accept the election results after an inconclusive first round of talks. Both Mr. Gbagbo and Mr. Ouattara say they won the November 28 presidential run off election. The United Nations, the United States and many other world powers recognize Mr. Ouattara as the winner and the country's president. The presidential election was intended to stabilize the country eight years after a civil war divided the country into northern and southern factions. .