December 24, 2013 - 7:28AM Australians, British, Canadian and Kenyan citizens are among 3000 foreigners trapped in a South Sudan city experiencing bouts of heavy machine gun fire, one of the most violent areas of a weeklong conflict that has likely killed more than 1000 people, a top UN official says. BEIRUT - The opposition Syrian National Coalition says it will not attend planned peace talks in Geneva if government warplanes keep up their bombing campaign on the northern city of Aleppo. JOHANNESBURG - The wing of a British Airways Boeing 747 has crashed into a Johannesburg airport building, slightly injuring four ground staff. JERUSALEM - Israeli Mossad agents operating in Ethiopia in 1962 unwittingly trained Nelson Mandela in hand-to-hand combat, weaponry and sabotage, according to a document released by Israel's state archives. VATICAN CITY - Pope Francis has visited his predecessor Benedict XVI for an informal Christmas greeting, as the Argentine pontiff prepares to celebrate his first Christmas as leader of the world's Roman Catholics. LONDON - Prince Harry has been praised by his brave band of wounded soldiers as they received a heroes' welcome after returning from a "crazy" South Pole adventure.