 I'd like to highlight two key themes in a way that run through the chapters, and they're both obvious points in some ways, but they're frequently forgotten in policy debates, so I think it's worth emphasizing them. Now one key issue that comes up again and again is the importance of recognizing the many variations in migration and its impacts and policy responses across space, so across different countries, across demographic groups, and across different levels of government. For example, if you want to discuss the common policy, a global policy, of course it is very important to understand, agree on what the policy variations across borders are and what that means for trying to come up with a common approach. And the second key issue that runs across is the issue of interconnections between across space, so immigration, immigration transit countries, for example, interconnections between different types of migration, labor migration, refugee student migration, interconnections between migration and wider public policy issues. One of the points that I make in almost any public policy forum is the importance of not discussing migration in isolation of other public policy issues. If we talk about migration, we have to talk about labor markets, we have to talk about development, we have to talk about lots of other issues. So what the report does is try to make these linkages in a very explicit way.