The water conflict was a very tricky question. You had to relate the effect of climate change on watersheds of all 5 rivers analysing the annual/seasonal flows. Then you had to comment on effect of Indian dams on ecology of the area. Terms like minimum ecological flow etc had to be used. I remember India altered the design of a couple of their dams due to ecological and climatic reasons when we protested in front of ICA. It was the only difficult question and rest were quite easy and unexpected