Umaru Yar'Adua, the Nigerian president, has returned home after a 93-day absence while seeking medical treatment in Saudi Arabia.
But he has not been seen or heard in public since he returned to Nigeria a week ago, serving to fuel speculation about the state of his health.
Sudan's governemnt has accused Darfur's largest refugee camp of harbouring rebel fighters. The Kalma camp is the only one that is permanently protected by United Nations and African Union forces, but residents fear they may be driven out as the military threatens to take action. Al Jazeera's Hoda Abdel-Hamid reports from the camp.