Mexican President Andrés Manuel López Obrador has accused the United States of sharing responsibility for a surge in violence in Sinaloa following the arrest of cartel leader Ismael 'El Mayo' Zambada. The violent conflict between rival factions of the Sinaloa cartel has led to at least 30 deaths in the past week, with fears among residents prompting early business closures and low school attendance. López Obrador described the U.S. operation to capture Zambada as illegal and destabilizing, criticizing unilateral U.S. actions that affect Mexican security. Despite military patrols, the atmosphere in Culiacan remains tense, with families avoiding outdoor activities due to safety concerns. The president's call for cartel factions to act responsibly has not yielded results, drawing criticism of his non-confrontational approach to cartel violence. This incident adds further strain to the already complex U.S.-Mexico relationship regarding security and judicial matters.