The fifth installment of Stimson's Environment and Security Discussion Series featured the Ambassador of Mauritius, Dr. Milan J. N. Meetarbhan, in conversation with Alice Thomas, Head of the Climate Displacement program at Refugees International, about the geopolitical and environmental challenges confronting small-island states in a warming world. The event explored key risks and opportunities for sustainable development and national security, including threats from rising sea-levels and stronger potential storms, and the connections between maritime resources and island economies. Ambassador Meetarbhan discussed the development of an "Ocean Economy" in Mauritius and on-going initiatives to build climate resilience. Alice Thomas discussed the legal complexities surrounding potential forced displacements or planned migrations in the face of climate impacts and current efforts to identify legal frameworks for possible climate refugee populations. The discussion closed with an informal Q&A session between the speakers and audience participants.