The Justice and Equality Movement rebel group is a powerful force in Sudan, with a large array of weaponry and trucks.
The group says it wants to create a new country - the United Regions of Sudan (URS) - and redistribute local wealth more fairly.
Al Jazeera's May Welsh reports exclusively from the Chad-Sudan border.
CNN.com : "HARARE, Zimbabwe (CNN) -- Zimbabwe's opposition leader called the cholera outbreak in his country a 'man-made crisis,' as new figures released Thursday showed the death toll had soared to more than 2,700."