Brahma Chellaney: The sharpening international geopolitical competition over natural resources has turned some strategic resources into engines of power struggle. Transnational water resources have become an especially active source of competition and conflict, triggering a dam-building race and prompting growing calls for the United Nations to recognize water as a key security concern.
Water is different from other natural resources. After all, there are substitutes for many resources, including oil, but none for water. Similarly, countries can import fossil fuels, mineral ores, and resources from the biosphere like fish and timber; but they cannot import water, which is essentially local, on a large scale and on a prolonged – much less permanent – basis. Water is heavier than oil, making it very expensive to ship or transport across long distances even by pipeline (which would require large, energy-intensive pumps).
The paradox of water is that it sustains life but can also cause death when it becomes a carrier of deadly microbes or takes the form of a tsunami, flash flood, storm, or hurricane. Many of the greatest natural disasters of our time – including, for example, the Fukushima catastrophe in 2011 – have been water-related.
...Rapid economic and demographic expansion has already turned adequate access to potable water into a major issue across large parts of the world. Lifestyle changes, for example, have spurred increasing per capita water consumption, with rising incomes promoting dietary change, for example, especially higher consumption of meat, production of which is ten times more water-intensive, on average, than plant-based calories and proteins.