UN agencies issued an unprecedented joint appeal Jan. 17 calling for an end to the violence in Darfur, where widespread attacks and insecurity threaten to collapse the world’s largest aid operation. The statement said in the past six months, some 250,000 people had been forced to flee violence, many for the second or third time, and a dozen aid workers were killed, more than at any other time during the four-year-old conflict. (Reuters)

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