Rabid nationalism may yet drive a nation to wage war against another through blocking water resources. China could do it to India through damming the Brahmaputra. Turkey could do it in the Middle East, and it is common knowledge that whoever hold Goan Hights also controls the flow of Water.
But I am talking about many of the suggestion on my twitter account and blog. That starving Pakistan of water is a way to control terrorism that originates from there. I am afraid that is not and never should be an option. The worldwide war on terror is not against the people of a nation, the children of a nation, but against the terror outfits that exist or are protected by that State. Even of it was considered a strategic option in a state of war, it would be a stupid one.
For the terror outfits, the military and the high command will be the first to draw for themselves whatever water resources they may have. Leaving the ordinary powerless civilians, women and children dying of thirst. Thereby driving more of them into a frenzy of fundamentalism and war. Three days of watching your kids die of thirst will drive you to extremism, however non violent or liberal you may be. Within India we are watching killings everyday over mere buckets of water at wells.
Using water as a weapon of war is a to set a precedence from which there is no escape. Expect it to be used against yourselves too. Over 100 million people in India depend upon the water that flows down from the glaciers of Tibet.
Using water as a weapon is the surest way of inviting an all out nuclear war. For it leaves no other option.