I have absolutely no faith in the ability of the government of a bigger nation to think in the best interests of a smaller neighbor. (Just look at US history with Latin and South America.) What does "its share of water" mean? Does it mean that they'll flood Bangladesh when there is too much water for the reservoirs to hold? Does it mean that practically all the water flow will stop in the dry months? Put yourself in the other side's shoes. Would you trust them? Why? On what basis?