They have limited themselves to one meal a day, hoping their dwindling food supplies will last a month longer. "After that, we don't know what we'll do except survive off water and dates," he said by phone from Sudan's embattled capital. They face dwindling food supplies, power cuts, water shortages and patchy telecoms. He would have left Sudan but couldn't because he lost his passport before the fighting began. Life had come to a complete standstill, said Ahmed Khalid, 22, a college student still in Khartoum.

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