Permanent access to fresh drinking water or sufficient water supply for farming and industry: what is taken for granted in Switzerland can trigger conflict in other parts of the world. 263 catchment basins of rivers or lakes extend over two or more countries worldwide. Around 300 groundwater reserves spanning borders also represent the basis of existence for two billion people globally. The use of water across borders presents potential for conflict. Switzerland aims to defuse potential conflicts with a preventative approach through water diplomacy (Blue Peace).