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ForewordCircular migration is a term that has relevance stretching from premodern times to the present day. Once linked to the seasonally oriented patterns of nomadic movements, its application today relates more to the forces of global and regional economics than to nature. Nor is it any longer confi ned geographically to specifi c regions. There is little doubt that the emergence of patterns of contemporary circular migration is closely related to the economic, technological, and geopolitical changes of the late twentieth and early twenty-fi rst centuries. As Europeans move freely within the Schengen space, often cultivating dual or more ties and affi liations, or as transient migrant groups move between the Gulf states, there emerges indelible p...