CERL Advisory Council member Mark Fallon spoke with EL PAÍS about the 30 prisoners who remain imprisoned at the Guantánamo Bay detention facility. What is preventing its closure, he explains, are efforts on the part of the U.S. government to withhold information about the torture program and its proponents.

Mark Fallon spent over three decades as a national security professional, principally as a special agent with NCIS. He has conducted interrogations in the United States and internationally and chaired the three-agency Research Committee of the High Value Detainee Interrogation Group. Fallon was a member of the 15-person international steering committee of experts overseeing the development of the Méndez Principles on Effective Interviewing for Investigations and Information Gathering. He is also the director of ClubFed, LLC. Read his bio here.