In April 2015, John Dinges provided extensive testimony as a witness for Prosecutor Pablo Ouviña during the "Plan Condor" trial in Buenos Aires, Argentina. As a expert on Operation Condor, Dinges is the most frequently cited expert witness in the prosecutor's case due to his significant contributions to the investigation across multiple countries including Chile, Paraguay, Argentina, Uruguay, Bolivia, Brazil, and the United States. His contributions include authoring two notable books - "Assassination on Embassy Row" and "The Condor Years" - conducting interviews with over a dozen police, military agents, and victims, and gathering crucial data from intelligence archives in the region. In May 2016, the verdict of the tribunal, the "Tribunal Oral Federal N°1," declared 15 convictions directly related to the forced disappearance of 106 victims.
