International migration, whether temporary or permanent, is one of the most important and perhaps the most sensitive and contentious facet of globalization today. There were an estimated 214 million international migrants in 2010, constituting around 3.1 percent of the world's population. This number has risen from around 82 million in 1970, reflecting the huge increase in international migration flows over the past few decades. 1 In this global context, Asia has played an important role in shaping global migration trends.