Even in areas of plentiful cheap water, it takes electricity to make chlorine for sanitary treatment, and it takes relatively much larger amounts of energy to s

Even in areas of plentiful cheap water, it takes electricity to make chlorine for sanitary treatment, and it takes relatively much larger amounts of energy to successfully process sewage, so when the grid inevitably goes down, war or not, there will be lush supplies of irrigation grade water that will sicken or kill anyone who drinks it. Food equals water for all practical purposes so higher water costs equals higher food costs. Right when the transportation infrastructure is likely to be overloaded...