Amin Saikal writes: The Middle East is one of the driest regions in the world. The scarcity of water has often been touted as a source of national and interstate disputes in the area. Some scholars have predicted for some time the possibility of deadly national altercations and regional clashes over the distribution of water resources in parts of the region. Although no full-blown war has erupted so far, two current episodes illustrate this point: public protests in the Iranian province of Khuzestan and the growing discord between Ethiopia, Egypt and Sudan over water dispensation from the Nile River. With climate change causing more droughts, the potential for conflict over water cannot be underestimated.