The United Nations has called for an additional $200 million to provide aid to more than half a million people uprooted by violence in Chad and the neighbouring Central African Republic (CAR) and Darfur region of western Sudan, as demand mounts for humanitarian assistance. “People in eastern and southern Chad still require considerable help from the international community as they attempt to cope with the effects of displacement and in some cases to rebuild their lives,” said Eliane Duthoit, head of the UN Office for the Coordination of Humanitarian Affairs (OCHA) in Chad.