Mexican Foreign Minsiter Luis Ernesto Derbez listens to a question during a press conference at which he announced that the extradition to [Spain of alleged Argentine Dirty War torturer Ricardo Miguel Cavallo had been approved by his ministry] June 18, 2003. [Cavallo is a former Argentine naval officer accused of torturing and murdering several Spanish citizens during Argentina's counter insurgency campaign known as the Dirty War. Cavallo was arrested as he tried to flee the country after his identity was exposed while he was working for a Mexican government car registration agency.]