An offshoot of al-Qaeda has emerged in the deserts of North Africa, claiming an area it calls the Sahara Emirate.
The group roams the border region of Algeria, Mauritania, Mali and Morocco.
Al Jazeera has obtained exclusive footage showing the fighters posing with bombs and rocket propelled grenades at a desert camp.
Mohammed Vall reports from Mauritania.
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.