John Yoo is the Emanuel Heller Professor of Law at the University of California at Berkeley and a visiting scholar at the American Enterprise Institute. Yoo was an official in the Office of Legal Counsel of the U.S. Department of Justice, where he worked on national security and terrorism issues after the September 11 attacks. He served as general counsel of the U.S. Senate Judiciary Committee under Chairman Orrin Hatch of Utah and was a law clerk for Justice Clarence Thomas of the U.S. Supreme Court and Judge Laurence Silberman of the U.S. Court of appeals in Washington, DC. In 2014, Yoo co-founded the Korea Law Center, the nation’s leading center for the study of U.S.-Korean legal issues, and he directs Berkeley’s Public Law and Policy program. Yoo regularly contributes to The Wall Street Journal, New York Times, Washington Post, Los Angeles Times, National Review, and The Weekly Standard. He is author of several books and his latest book, Embracing the Machines: Robots, Cyber, and New Rules of War, will be published this fall.