Synopsis To define national security and uncover the underlying causes of inter-state strifes and subnational conflicts in various parts of the globe in cold war parlance is grossly inadequate and is also insufficient to combat the mounting challenges and threats stemming from catastrophic environmental degradation. Revisioning the conventional cold war understanding and logic, this book endeavours to unearth the predominant causes and factors, so far sidelined, of intra-state conflicts between Bangladesh and India, that is, environmental degradation and scarcity of renewable resources. It establishes the linkage between environmental degradation and inter-state conflict.