Fiona Cunningham, an assistant professor at the University of Pennsylvania, argues that China has found a novel way to coerce its adversaries in future wars, even with fewer nuclear weapons and a weaker military than the United States. In a book published this week, Under the Nuclear Shadow: China’s Information-Age Weapons in International Security, she explains how China has given a “starring role” to a new class of armaments. In this conversation, which has been condensed and edited, we