Mexican and U.S. authorities have intensified joint operations against major cartels in 2026, with recent arrests highlighting cross-border intelligence sharing. In early October, Mexico captured Iván “El Tanque” Cazarín Molina, a regional CJNG leader and associate of the late Nemesio “El Mencho” Oseguera, in Zapopan following U.S. sanctions and DEA coordination; the suspect faces charges tied to violence, drug trafficking, and a 2015 helicopter attack. Additional detentions include Mara 18 figures and dozens of lower-level CJNG and Sinaloa members through coordinated raids yielding weapons and narcotics. U.S. Treasury sanctions on Sinaloa networks, expanded rewards programs exceeding $100 million for key figures, and prior leadership disruptions such as El Mencho’s death continue to shape enforcement priorities. Upcoming bilateral actions and ongoing indictments could influence further high-value captures before year-end.