The Mexican military killed Nemesio 'El Mencho' Oseguera Cervantes on 22 February 1, the founder and Supreme Leader of the Jalisco New Generation Cartel (CJNG). The US Drug Enforcement Administration had placed a $10 million bounty on Oseguera Cervantes — among the highest ever issued for a drug trafficker — and designated CJNG the single greatest criminal drug threat to the United States. Under his leadership since roughly 2010, the organisation expanded from a regional methamphetamine operation into a transnational network the US Treasury has linked to fentanyl trafficking, extortion, and illegal mining across at least two dozen countries.
CJNG is distinguished from Mexico's other major cartels by its willingness to engage state security forces with military-grade weapons. The organisation shot down a Mexican military helicopter with a rocket-propelled grenade in Jalisco in 2015 and killed 15 police officers in a coordinated ambush on the same day — an escalation without precedent in the drug war at that time. This operational capacity bears directly on World Cup security: CJNG's territorial base is Jalisco state, and Guadalajara — the state capital — hosts four group-stage matches beginning in June.
Two decades of Mexican security policy offer a consistent lesson about what follows a kingpin's removal. The killing of Arturo Beltrán Leyva in 2009 fractured his organisation into warring factions that fought over territory for years. The arrest and extradition of Joaquín 'El Chapo' Guzmán contributed to the Sinaloa Cartel's eventual internal split, which erupted into open warfare in Sinaloa state in September 2024. In each case, the successor struggle produced more violence, not less, in the months that followed. No clear successor to El Mencho has been publicly identified. His son, Rubén Oseguera González — who had been positioned within the leadership structure — has been in US federal custody since his 2020 extradition on drug trafficking charges 2.
