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"Using ten Asian megacities as examples, this article discusses a range of megacity characteristics and problems, including population growth, economic structure, spatial strategies, land policy, urban service provision, institutional development, and managerial problems. In spite of major progress in urban service delivery, ineffective land policies and inadequate cost-recovery systems remain serious obstacles. Megacities need and are promoting policentric spatial structures, but implementation lags in many cases. Institutional reforms are needed to cope with the metropolitan region character of megacity growth."

This article presents an overview of policies adopted to curb or respond to irregular migration flows. The article is presented in two sections. The first section, which is an overview of policies adopted in all regions of the world and in both developed and developing countries, attempts to show that there are a number of similarities in the decision-making process and in the content of policies that cut across regional lines and levels of development. The second section discusses policies adopted by governnments in Africa asnd Asia — regions that have been relatively neglected in policy analyses of irregular migration.

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