The overuse of legal painkillers and the rise of fentanyl, a synthetic opioid which is easy to produce and transport across borders, has created a global opioid crisis. What do governments need to do to curb supply and combat addiction? Keith Humphreys, professor of psychiatry and behavioral sciences at Stanford University, and German Lopez, senior correspondent at VOX, discuss the consequences of a global drug market flooded by opioids with WorldAffairs Co-Host Ray Suarez.

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