United Nations officials in Chad expressed concern on Tuesday at surging numbers of people fleeing conflict in Sudan and confirmed that they have scaled up the organization’s response to help the wounded and malnourished. “Some 276,000 people now may have already crossed the border, hosted by Chad where we already have many food insecurities, with already some 600,000 refugees pre-war that were already almost impossible to assist owing to a lack of funding,” said Pierre Honnorat, World Food Program’s country director in Chad.