Most basins have been subject to discussion and negotiations between riparian states, and some, most notably the Jordan River Basin, have been overshadowed by sustained political conflict. A wealth of literature exists on these disputed basins, although not necessarily on all relevant aspects. For example, the literature on the Jordan River Basin and, to a lesser extent, on the Euphrates and Tigris River Basins, is dominated by a focus on political relations, occupation and power asymmetry.