Heavy fighting has broken out in the Somali capital, Mogadishu, a day after the UN World Food Programme airlifted in its first famine emergency aid. (..) Challiss McDonough, a spokeswoman for the WFP, said the 10 tonnes of Plumpy'nut, a peanut-based paste high in protein and energy, would be enough to treat 3,500 malnourished children for a month.