Prof. Benjamin Smith, author of The Dope: The Real History of the Mexican Drug Trade, provides insights into various aspects of the Mexican drug trade, including its historical context and the evolution of illicit drug products over time. He discusses key cartels and their methods, the impact of the drug trade on Mexico's murder rates, the immense financial scale of the trade, its effect on Mexico and the U.S., and the challenges law enforcement face in combating it. Smith explores the relationship among Mexican cartels, other foreign countries, and the illicit drug market in the U.S.