In this episode, Mariana speaks with Vanda Felbab-Brown, a Brookings scholar of crime, conflict, and non-traditional security threats, and Guillermo Valdes, former head of Mexico’s Center for Investigation and National Security, CISEN. They discuss the evolution of Mexico’s cartels, the failure of the Mexican government to curtail their growth, and how they have diversified into other illegal and legal businesses. They also speak about how the lack of cooperation between the U.S. and Mexico—and the U.S. and China—is making it impossible to dismantle the Fentanyl supply chains and how Chinese and Mexican drug and wildlife trafficking activities are colliding, threatening various species and Mexico’s biodiversity.