In his first visit to the region, Negroponte toured the strife-torn Darfur region and criticized the Sudanese government for its response.
"When it comes to humanitarian access, the government of Sudan's record is not encouraging," Negroponte told a news conference in Khartoum. "The denial of visas (and) the harassment of aid workers have created the impression that the government of Sudan is engaged in a deliberate campaign of intimidation."
Negroponte urged Khartoum to disarm the Janjaweed, the Arab militias terrorizing Darfur refugees, and to allow additional U.N. and African Union peacekeepers into the region.
Notable deaths of 2014 [PHOTOS]