The United Nations is accusing forces loyal to incumbent Ivory Coast president Laurent Gbagbo of attacking its vehicles. On Thursday, the U.N. officials said six vehicles were targeted, including an ambulance whose driver and doctor were injured. Gbagbo has refused to step down after a disputed November 29 election. Gbagbo’s rival, Alassane Ouattara, is widely believed to have won the vote. According to the United Nations, more than 200 people have died and some 20,000 have fled to neighboring Liberia as a result of post-election violence.