Iranians are running out of water and choking on some of the world's worst air pollution, environmental crises that critics say exemplify the failures fueling anger at the country's theocratic regime .  "If I want to use one word, it's mismanagement," Hamid Pouran, an environmental technology researcher who studied in Iran and is now based in the United Kingdom, told DW.  The country's most pressing environmental concern is a worst-in-decades drought , now in its sixth consecutive year. The