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An Egyptian man looks out from a shelter made out of blankets and tree branches on the Tunisian side of the Ras Jidir border crossing with Libya, March 3, 2011. More than half of the 180,000 people estimated to have fled Libya have crossed into Tunisia. Thousands of Egyptian, Bangladeshi and Sri Lankan migrant workers are stuck at the border as aid organizations and governments struggle to get them home via an airlift operation.