Antonio Guterres, the U.N. High Commissioner for Refugees, urged donor nations to ease "the enormous humanitarian tragedy." (..) Guterres said more than 200,000 refugees have fled the states of South Kordofan and Blue Nile and into neighboring Ethiopia and South Sudan. (..) Because of the fighting in South Kordofan and Blue Nile, families did not plant crops, fearful that Sudanese bombers would target them while in the field. That has forced residents to eat roots and leaves to survive. (..) The World Food Program says the latest influx of refugees into Ethiopia — from both Sudan and Somalia — is straining its operations there.