Reuters: Drought for a fifth year running is driving more than 23 million east Africans in seven countries towards severe hunger and destitution, international aid agency Oxfam said on Tuesday. Launching a $9.5 million (6 million pounds) appeal, it said the situation was being worsened by high food prices and conflict. The most badly hit nations are Kenya, Ethiopia, Somalia and Uganda. Malnutrition is now above emergency levels in some areas and hundreds of thousands of valuable cattle …