Water is life. We can survive several days without eating but not without drinking. Water is also the basic ingredient, essential to the production of all kind of food, whether vegetable or animal. This is why the issue of access to fresh water has always been central for humans, and has therefore always been a source of many conflicts. Inherently linked to climate change, economic development and population growth, however, these conflicts are today taking on an increasingly worrying dimension: access to water is becoming one of the main geopolitical issues of our century.