“Fragility is the single most salient cause of displacement around the world today. Even factors that may become increasingly common drivers of flight like climate change and natural disasters are only likely to cause mass cross-border movements if they affect fragile states. When Hurricane Katrina struck New Orleans it did not require people to leave the United States. In contrast, when the earthquake struck Haiti many people fled to the neighbouring Dominican Republic because they could not find a domestic remedy or resolution to their situation.”