In the third of a four-part series on food security - "Are we heading for another crisis?" - IRIN looks at a region where 20 million people are in need of food aid, and what could be done to avoid another food-price crisis.
Globally, the price of most staples like maize and wheat have been falling, but people in east Africa are still paying up to double the 2007 price, said the new food security update by the UN Food and Agriculture Organisation (FAO).
