International migration of people in Asia takes a variety of forms. A salient feature of migratory flows in the region has been the large and growing volumes of migrant workers directed towards the oil producing countries in Western Asia and towards relatively affluent economies in Eastern and South-eastern Asia. Western Asia also comprises Israel, a country that has admitted a substantial number of immigrants. Furthermore, Asia hosts the largest refugee population in the world. This report illustrates the complexities of contemporary population movements which have posed unprecedented challenges to many countries in the region.