South Asia is particularly vulnerable to the effects of global warming, including glacial melting, increased flooding, droughts, destruction of crops and habitations, and resulting displacement. This is due to the exponential function of rapidly increasing population, growing food demand and dependency on water for irrigation and energy. The Food-Energy-Water (FEW) connect is thus critical, and river water is an important part of the equation. With the increasing importance of transboundary river water in South Asia, is the region heading towards more conflict, or will hydro-diplomacy create new frameworks for regional cooperation?