UN Secretary General, Ban Ki-moon (C) shakes hands with Somali women as he stands next to Somali Prime Minister Abdiweli Mohamed Ali (R) after his arrival at Mogadishu\"s Adan Abulle airport, Somalia on December 9, 2011. Ban Ki-moon is the first UN secretary general to visit Mogadishu for 20 years UN head Ban Ki-moon is visiting the Somali capital, Mogadishu - the highest-ranking foreign official to go there in years. He was wearing a bulletproof vest as he was welcomed at the airport by Somalia\'s prime minister. His visit comes a day after the fiercest clashes in the city for several months. Islamist militants are battling the forces of the UN-backed government and African Union troops. Somalia has been racked by war for two decades and has not had a functioning national government since 1991.