Fresh clashes have erupted in eastern Chad between government troops and rebels from neighbouring Sudan.
The government says the fighting has killed nearly 250 people in two days, most of them rebels
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.