Guardian: Fatima Ibrahim was having two of her children weighed, measured and fussed over when we found her with 30 other mums and more than 50 hungry kids at an emergency feeding centre in northern Kenya. Barwaco came in at 12.8kg and her brother Mohamed at 8.1, and both were crying lustily as people crowded round Dida Jirma, a young community doctor. Jirma noted the children’s weights and height and measured the circumference of their left upper arms. Some were ominously quiet and clearly …