Vijay Padmanabhan and others talked about the Guantanamo Bay detention center. Mr. Padmanabhan was formerly an attorney-adviser in the Office of the Legal Adviser at the U.S. Department of State under President Bush. He was the department’s chief counsel on Guantanamo and Iraq detainee litigation, as well as other litigation implicating the law of war. He collaborated with the Departments of Justice and Defense on several Supreme Court Cases.