In this edited collection the contributors have identified the challenges around the theme of drivers of regionalism and integration, presenting research agendas. This chapter provides a comprehensive assessment of the main findings with regard to ‘what and who drives regionalism’, in Europe and Asia. In addition, we sought to identify the drivers of interregionalism. We placed this in the context of pressing contemporary challenges. Our approach has been intentionally interdisciplinary. As a result, the volume has sought to offer a rich set of insights. We considered it important to provide perspectives from policy actors as well as experienced scholars and new academic voices.