Joshua Geltzer serves as the founding executive director of the Institute for Constitutional Advocacy and Protection, as well as visiting professor of law at Georgetown University Law Center. He is also an ASU Future of War fellow at New America. Geltzer served from 2015 to 2017 as senior director for Counterterrorism on the National Security Council staff, having served previously as deputy legal advisor to the National Security Council and as counsel to the assistant attorney general for National Security at the U.S. Department of Justice. He also served as a law clerk to Justice Stephen Breyer of the U.S. Supreme Court. Geltzer received his J.D. from Yale Law School, where he served as editor-in-chief of The Yale Law Journal and his Ph.D. in war studies from King’s College London, where he was a Marshall Scholar. Before that, he attended Princeton University.