The Sinaloa Cartel, the world’s most-feared fentanyl trafficker, is reeling from an internal war and a U.S.-Mexican crackdown. Its fate could upend global criminal networks.The Sinaloa Cartel, the world’s most-feared fentanyl trafficker, is reeling from an internal war and a U.S.-Mexican crackdown. Its fate could upend global criminal networks.
