U.N. special envoy to Darfur Jan Eliasson painted a bleak picture of the war-torn Sudanese region Friday, warning that rebel groups had made only limited progress toward peace talks. In an interview, Eliasson details the latest developments in Darfur and explains how unrest in neighboring Chad may further inflame the crisis.

U.N. special envoy to Darfur Jan Eliasson answers your questions on the worsening situation in Sudan's Darfur region and neighboring Chad, where rebels threatened to overtake the capital.

This lesson addresses the medical nature of the humanitarian crisis in Darfur, including the conditions and resulting illnesses that pose the most concern to aid personnel working in the region.

View a multimedia essay, video and background information on the human, political, military and historical realities in the region from the Council on Foreign Relations.

-- Requires Flash Player