The U.N. envoy to Sudan says a lack of security in strife-torn Darfur will prevent more than 1 million displaced people from voluntarily returning to home in the next three weeks. Jan Pronk, the world body's special representative to Sudan, on Wednesday also urged this country's government to do more to end the 18-month conflict in western Sudan. Addressing reporters in the Sudanese capital in his first news conference since assuming his position June 18, Pronk described the Darfur situation as a "tragedy".
