“…In some cases, a nation's entire water supply system originates outside its borders and has to rely on the goodwill of the upstream countries to sustain that supply, for example, Egypt (99%); Mauritania (95%); Botswana (94%); and the Gambia (86%) (see Rieu-Clarke et al, 2012). Thus, the continent is one of the most hydrologically interconnected regions on the planet (Brozek, 2013). This scenario suggests that in the face of diminishing global freshwater resources, Africa is a special case.…”