Water, a crucial issue in international relations

Without water, what would we be ?
Whatever form it takes, it scoffs at borders and often links very different cultures, regions and countries together, in this way becoming a source of opportunities, but also the object of numerous desires.

"Once upon a time there was a river.
Here is the story of wisdom.
Once upon a time there was the great Senegal River.
Born in Guinea, it runs downstream to Mali, enters Senegal, and borders Mauritania before flowing into the sea.
These four countries, a...