This report is the ninth in the World Migration Report series. Since 2000, IOM has been producing world migration reports to contribute to increased understanding of migration throughout the world. Indeed, it is one of IOM’s key contributions, and it has taken on heightened importance in an era of “post-truth” politics, “information overload” and “fake news”. The chance for evidence and knowledge to help explain migration and how it is changing seems to be diminishing at a time when, more broadly throughout the world, facts and expertise seemed to have increasingly taken a back seat to opinion and politics.