The "migration-displacement nexus" is a new concept intended to capture the complex and dynamic interactions between voluntary and forced migration, both internally and internationally. Besides elaborating a new concept, this volume has three main the first is to focus empirical attention on previously understudied topics, such as internal trafficking and the displacement of foreign nationals, using case studies including Afghanistan and Iraq; the second is to highlight new challenges, including urban displacement and the effects of climate change; and the third is to explore gaps in current policy responses and elaborate alternatives for the future.