AS many as one million people are without food or water in southern Sudan after fleeing government-rebel fighting in the region, aid agencies said on Wednesday. ”A million people are living under the nightmare of extreme hunger and thirst,” Monsignor Cesare Mazzolari, a bishop in the region, told the Catholic missionary news agency Misna in Rome. ”These people are on the brink of death.” Mazzolari said the worst situation was in Bahr el-Ghazal, in southern central Sudan, close to the border with the Central African Republic, where several people had already died of thirst and faced the threat of cholera and other diseases. He said fighting in the region in recent weeks had left many soldiers dead and their poorly buried bodies threatened to contaminate the water supply when rains come. – Reuters