The South Asia region presents a confluence of major climate impacts and key security issues. From a weather and climate standpoint, the region experiences a wide range of hazards, such as the recent heatwaves, droughts, storms, and floods that have upended the lives and livelihoods of millions of people. From a demographic and socioeconomic standpoint, the region is experiencing rapid transformations and progress, even as fundamental challenges such as poverty and inequality persist. From a security standpoint, the region is the setting for a range of social and political dynamics that impact U.S. interests, including conflict at national and subnational levels; regional rivalries; and the imprint of global geopolitics.

On October 26-27, 2022, the National Academies of Sciences, Engineering, and Medicine, under the auspices of the National Academies Climate Security Roundtable, convened a workshop to explore climate security in South Asia. Over two days, workshop participants considered some of the underlying climate, development, and geopolitical dynamics at play in the South Asia region; explored a set of historical case studies and future scenarios for climate change and security in South Asia; and they considered the available tools for analysis and forecasting climate-related risks. This publication summarizes the presentations and discussion of the workshop.