Mexico Is on Edge After the Killing of a Cartel Boss

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by Matthew Cullen

February 23, 2026

AI-Generated Deep Dive Summary

Mexican authorities have reported widespread violence following the killing of Nemesio Oseguera Cervantes, also known as "El Mencho," the leader of the powerful Jalisco New Generation Cartel (CJNG). The military raid that resulted in his death triggered chaotic eruptions across the country over the weekend, with cartel followers attacking security forces, blocking roads, and setting fires to businesses. By Monday afternoon, order had mostly been restored, but many cities remained impacted, with schools, gas stations, and supermarkets closed in Guadalajara, near the epicenter of the violence. Airlines and bus companies canceled routes, leaving tourists stranded in popular beach destinations like Puerto Vallarta. The operation targeting El Mencho was aided by U.S. intelligence from the CIA. He was tracked through one of his romantic partners, leading to a significant victory for President Claudia Sheinbaum, who has pursued an aggressive anti-cartel strategy unlike her predecessor. While this move could alleviate pressure from former President Trump, who had threatened military strikes and demanded stronger cartel crackdowns, experts predict that CJNG will likely survive without its leader. The cartel’s resilience highlights the ongoing challenges Mexico faces in its fight against organized crime. The violence has drawn international attention due to both its scale and the U.S. involvement in tracking El Mencho. The situation underscores the complex relationship between Mexican and U.S. authorities, as well as the enduring impact of cartels on regional stability and security. For readers interested in global news, this incident offers insight into Mexico’s struggle with organized crime, its implications for U.S.-Mexico relations, and the broader challenges of combating drug trafficking and violence in Latin America.

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Originally published on NYT Homepage on 2/23/2026