NPR's Ari Shapiro talks with Tom Fletcher, the UN's top humanitarian and emergency relief official, about his first-hand look at what's been called "the world's worst humanitarian crisis" in Sudan.

KHARTOUM, Sudan Sudan said Wednesday it would allow U.N. Undersecretary Jan Egeland to visit Darfur, three days after barring his flight to a region the United Nations has called site of the world's ...

The U.N. Security Council will go to Sudan next week to press officials in the north and south to speed up preparations for a referendum on southern independence, diplomats said on Tuesday.

NPR's Ari Shapiro talks with Tom Fletcher, the UN's top humanitarian and emergency relief official, about his first-hand look at what's been called "the world's worst humanitarian crisis" in Sudan.