Question: Which cofounder of the Center for a New American Security served as a principal advisor to U.S. Secretaries of Defense Robert Gates and Leon Panetta?
Sentence (from "Derek Chollet"): He is a contributing editor to Foreign Policy, where he coedits "Shadow Government," and is a regular contributor to Defense One, is also an advisor to Beacon Global Strategies and an Adjunct Senior Research Scholar at Columbia University’s Saltzman Institute of War and Peace Studies.
Relevant evidence: No