The earth is covered with water to about 70%, nearly the same amount as the proportion of water in the human body. We humans are dependent on water, so it is important that any freshwater resources are distributed equitably and the waste of it is contained. Conflicts can occur anywhere where the use of water is purely the foundation of life and where water must be shared by states. Water wars threaten when a state can blackmail another by "turning the tap".

Material: plastic bottles and small plastic soldiers