Afghanistan is the world’s fastest-growing maker of methamphetamine, a report from the United Nations drug agency said Sunday. The country is also a major opium producer and heroin source, even though the Taliban declared a war on narcotics after they returned to power in August 2021. The United Nations’ Office on Drugs and Crimes, which published the report, said meth in Afghanistan is mostly made from legally available substances or extracted from the ephedra plant, which grows in the wild.