Conflict. Crisis. And a vital resource.
Sunday is World Water Day, a United Nations initiative to draw attention to issues of water scarcity and sanitation.
Ahead of World Water Day, the UN released a report warning of looming global shortages - exacerbated by population growth and global warming - that could lead to castrophes of many types.
Among the potential problems with more frequent and severe water shortages is the heightened potential for violent conflict between peoples and nations.
Explore our interactive map, highlighting some of the areas where water disputes could cause conflict in the future, as well as some areas where water is already the cause of violence.