Egypt and Ethiopia used to be at odds over shared usage of the Nile River's water resources, but Egypt's new leadership seems to prefer cooperation.
The leader of the northern arm of the Sudan People's Liberation Movement says the growing conflict is "about democracy and transformation," not land.
Rebel fighters trample on a head of Muammar Qaddafi inside the main compound in Bab al-Aziziya in Tripoli, Libya, on Aug. 23.
Despite the United Nations' insistence, the Sudanese Army is refusing to pull out of Abyei until Ethiopian peacekeeping forces are fully deployed.
The thousands of Sudanese civilians who fled Abyei last month are wary about returning because they doubt the staying power of the most recent agreement to bring peace.
With the euphoria over the Arab Spring wearing off, President Obama is sending top aides to the Middle East to address worsening violence in Yemen and fears of renewed civil strife in Sudan.
NATO's agreement to take over no-fly operations in Libya fulfills Obama's promise that US involvement would be limited. Alliance members authorize a 'civilian protection mission.'