The Bay of Bengal is uniquely vulnerable to a changing climate because of a combination of rising sea levels, changing weather patterns, and uncertain transboundary river flows. These problems combine with already existing social problems like religious strife, poverty, political uncertainty, high population density, and rapid urbanization to create a very dangerous cocktail of already security threats. Andrew Holland argues that foresight about its impacts can help the region’s leaders work together to solve a problem that knows no boundaries.