The Drug War Has Failed: Interdiction Won't Solve Fentanyl Epidemic

The synthetic opioid fentanyl has been ravaging urban communities throughout the United States; nowhere has the wake of destruction been more serious than Baltimore, where the city's large population of heroin addicts has begun to consume fentanyl in large numbers. The danger of overdoses is serious, as fentanyl is 50 times more powerful than heroin. The drug is largely produced in China, then shipped to Mexico, where drug cartels distribute it throughout the US. It's a tragic situation, but is the Drug War the answer? Has the so-called "War on Drugs" worked, and will interdiction make a dent in supply if American public policy is ultimately unable to reduce the demand? Do human beings have the right to make their own decision regarding drug use, and what is the libertarian perspective on all this?