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The UN has two refugee agencies. One, UNRWA for the Palestinians and one for everyone else. UNRWA determined that every Palestinian everywhere unto the last generation is a refugee. This is probably a good model for the Iraqis. Just declare them refugees everywhere, forever, for an unlimited # of generations. So the Iraqis who live in Damascus and Amman and who are not given any legitimate status there, even to the point where their children are barred from school, would simply be declared refugees to be administered by the UN. The neighborhoods the live in would be reclassified as refugee camps.