Water is the basis of life. The access, possession and control of water therefore mean power, make it a potential source of conflict. But the hypothesis that as nations run of out of water they may go to war is one-dimensional and linear. It underestimates other factors including how nations operate, what motivates war and the actual cost of war.
Shared water resources i.e. the approximately 276 water bodies, lakes and rivers shared by some 148 countries around the world, are generally seen as issues of potential conflict. Empirical evidence reveals, however, there have been more instances of cooperation than conflict over shared water resources in the past decades. On occasion countries have used their shared water resources to forge ties often leading to cooperation in other spheres as well.