New York, Dec. 15 -- Violence has escalated dramatically in the Kordofan region of Sudan, deepening what is already the world's largest humanitarian crisis. Communities in Dilling and Kadugli, South Kordofan, remain trapped under siege conditions that have cut off access to humanitarian aid, depriving the civilian population of food, medicine and other basic supplies and services. Amid these conditions, more than 63,000 children in South Kordofan are acutely malnourished, including over 10,000 suffering from severe acute malnutrition.

Clashes and shifting control in Bara, North Kordofan, in November resulted in widespread killings and mass displacement. On 1 December, a change in control of Babanusa in West Kordofan triggered a new wave ...