Joining us this week is Herbert Lin, Senior Research Scholar at the Center for International Security and Cooperation and Hank J. Holland Fellow at Stanford University. He’s author of the book, Cyber Threats and Nuclear Weapons, in which he outlines the challenges the U.S. faces in modernizing the control systems for our nuclear weapons arsenal, the dangers of connecting these systems to the internet, and the peril of feature-creep and increased complexity in the nuclear age.