In this Monday, April 30, 2012 photo, Faty Ba and three of her five children, sit for a photograph in their hut in the village of Fass, in the Matam region of northeastern Senegal. Since late 2011, aid groups have been sounding the alarm, warning that devastating drought has again weakened communities where children already live perilously close to the edge of malnutrition.The situation is most severe in Niger, Chad and in Mali, but this time it has also pervaded northern Senegal, the most prosperous and stable country in the Sahel. (AP Photo/Rebecca Blackwell)