History, tribalism, internal power struggles and fractured lines of communication divide various rebel factions in Sudan. Read more in this guide.

Senators Hillary Clinton, John McCain and Barack Obama issued a rare joint statement today, deploring the atrocities in the Darfur region of Sudan.

The newly formed Arab Coalition for Darfur condemned the Muslim world for its silence on the atrocities in Darfur during the 35th Organization of the Islamic Conference, a meeting of the foreign ministers of 57 Muslim nations.

A member of the joint U.N.-African Union peacekeeping mission in Darfur was shot and killed in a refugee camp outside the North Darfur capital El Fasher on Wednesday.