Question: El Narco: Inside Mexico's Criminal Insurgency is a non-fiction book, the book covers the frontline of which Mexican theater of the United States' War on Drugs, involving an ongoing low-intensity asymmetric war between the Mexican Government and various drug trafficking syndicates?
Sentence (from "Mexican Drug War"): Since 2006, when the Mexican military began to intervene, the government's principal goal has been to reduce the drug-related violence.
Relevant evidence: No