Ismael Zambada Violence Ismael Zambada Garcia Joaquin Guzman Lopez Leadership Arrests Jalisco New Generation Cartel Arrests Joaquín Guzmán López Drug Theft Jalisco Cartel Ismael 'El Mayo' Zambada Fentanyl Intra-cartel Violence Culiacan Genaro García Luna Genaro Garcia Luna Ovidio Guzman Lopez Fentanyl Operations El Chapo's Sons Ceferino Espinoza Angulo Caro Quintero Rafael Caro Quintero Joaquin "El Chapo" Guzman Ovidio Guzman-Lopez Arrest of Felix Herrera Garcia Fentanyl Trafficking Midwest Drug Trafficking Crystal Meth Seizure El Chapo Mexican Operations Nestor Isidro Perez Salaz Fentanyl Manufacturing Ismael Zambada García Ismael 'El Mayo' Zambada Garcia Joaquin 'El Chapo' Guzman Lopez Law Enforcement Actions Leadership Changes Fentanyl Trade El Chapo Guzmán Los Mayos vs Los Chapitos