The expansion of dual-capable delivery systems and the diversification of strategic forms of warfare to include cyber, space, and advanced high precision conventional strike capabilities have sharply eroded structural conventional-nuclear firebreaks.
In the nuclear realm, the challenge of civilian control is solved with presidential authority. Understanding and addressing the concessions that presidents might make to military expertise surfaces the precarious nature of civilian nuclear command and control.
Understanding international security issues at the “nuclear nexus” is critical for managing a contemporary security environment characterized by rapid technological innovation, increased strategic competition, and a looming nuclear shadow.