Woven in between were major trade talks, investment announcements, a UN visit and a new ambassador nomination — all of it against the backdrop of a government determined to project both sovereignty and stability. Didn’t have time to catch this week’s top stories? Here’s what you missed.

CIA drama rocks Chihuahua — and Mexico-US relations The week’s defining story began with tragedy: a vehicle carrying U.S. Embassy staff and two senior Chihuahua officials plunged into a ravine early Sunday, killing all four. It quickly exploded into a diplomatic firestorm when both The Washington Post and The New York Times reported that the two American officials were CIA officers embedded with Chihuahua’s state investigation agency as part of an expanded counter-narcotics mission in the western hemisphere.

At Monday’s mañanera, Sheinbaum said her government had no knowledge of the joint operation and was asking both the Chihuahua government and U.S. authorities for information about their security collaboration. By Tuesday, with the CIA angle confirmed by major U.S. outlets, she ordered federal prosecutors to open a formal investigation. “We’re investigating what these people were doing and what agency they were from,” she said at her press conference.

“So far, the information we have is that they were working jointly [with Chihuahua authorities] … So the whole investigation has to be done by the Federal Attorney General’s Office to see if the constitution or the National Security Law was violated.” Sheinbaum was pointed on the constitutional question. “A Mexican state is not legally permitted to ‘directly’ enter into a security agreement with a U.S. government agency,” she stressed — such arrangements must be authorized at the federal level. She also made clear that joint security operations with the United States are not permitted within Mexican territory, adding that if the investigation confirmed a joint operation had taken place, Mexico would send a formal protest note to Washington and request that such collaboration not be repeated.

The Governor of Chihuahua Maru Campos initially told President Sheinbaum that the army agents who led the counter-cartel operation did not know that U.S. officials were also participating. (Presidencia/Cuartoscuro) By Wednesday, new evidence showed this had not been an isolated incident — CIA officers had reportedly participated in multiple Chihuahua security operations throughout the year, a revelation that shifted the political pressure squarely onto Chihuahua’s state government. “Of course the government of the United States, the ambassador, should have informed federal authorities,” Sheinbaum said on Thursday.

“But the main failure lies with the state government, which requested this collaboration. And that’s against the Constitution and the National Security Law,” the president said. On Thursday, federal Security Minister Omar García Harfuch met with Chihuahua Governor Maru Campos, who agreed to provide information.

Campos, along with Chihuahua Attorney General César Jáuregui Moreno, has been summoned by the Mexican Senate to explain under what conditions this collaboration with the CIA occurred. Shooting at Teotihuacán kills 2, injures 13 In a rare crime at one of Mexico’s most popular archaeological sites, a gunman opened fire on visitors at the Teotihuacán pyramids on Monday, shooting from a platform partway up the Pyramid of the Moon before turning the gun on himself. A 32-year-old Canadian woman was killed, and at least 13 people were hospitalized — seven from gunshot wounds, others from falls sustained during the panic.

Victims included nationals from Colombia, Russia, Brazil, the Netherlands and the United States, as well as a six-year-old Colombian boy. Teotihuacán shooter inspired by Columbine massacre in US, AG says: Tuesday’s mañanera recapped The gunman was identified as Julio César Jasso Ramírez, 27, originally from Tlapa, Guerrero, who had arrived at the site by Uber. He was shot in the leg by the National Guard before killing himself, and investigators say the GN’s rapid response likely prevented more deaths.

Authorities recovered a pistol, a knife and 52 unused cartridges, along with what they described as literature and manuscripts linked to violent events in the United States in April 1999 — likely in reference to the Columbine High School massacre, which occurred on the same calendar date 27 years earlier. Video from the scene captured Jasso making threatening remarks specifically targeting European tourists. At Tuesday’s mañanera, México state Attorney General José Luis Cervantes said authorities believe Jasso had visited Teotihuacán mu