In recent days, prolonged water cuts across Tehran have created widespread panic among the Iranian capital’s 10 million residents. Last week, after years of drought and reduced rainfall and snowfall, Iranian President Masoud Pezeshkian warned that Tehran’s residents would have to ration water—and eventually evacuate the capital—if there was no rain by late November. They’ve had years of warning, but Iran’s rulers have done nothing to resolve an increasingly existential water crisis. A few