In 2014, Xi Jinping established the China National Security Commission (CNSC) and was appointed its head by the Chinese Communist Party (CCP) Politburo. A year later, Xi stated that China “should attach equal importance to internal and external security.” Under his direction, the CCP has created a unified national security system based on Xi’s concept of comprehensive national security. That concept has evolved to include at least 16 forms of security, including military, territorial, technological, ecological, societal, polar, cyber, space, cultural, political, economic, bio, deep sea, resource, nuclear, and overseas interests. It is no exaggeration to say that national security tops Xi Jinping’s agenda. Bonnie Glaser talks with Dr. Sheena Chestnut Greitens about China’s concept of national security under Xi Jinping and the linkages between domestic security trends and Chinese foreign policy. Dr. Greitens is an Associate Professor of Political Science at the Lyndon B. Johnson School of Public Affairs at the University of Texas, Austin. Her research interests include East Asia, American national security, and authoritarian politics and foreign policy.