The number of Kenyans needing emergency food aid has doubled in the past three months to three million as the effect of a devastating drought worsens. <br/><br/>The Red Cross said today that Kenya is one of several East African countries suffering from food crises, along with Ethiopia, South Sudan, where famine has already been declared, and Somalia, on the brink of its third famine in 25 years.<br/><br/>Outside the region, Yemen and Nigeria are also facing famine, in what the United Nations has called the worst humanitarian crisis since the end of World War II.