Not Imaginary: The Deterrence Gap is Real and America Needs Low-Yield Nukes

Nuclear policy debates are at their best when they force hard questions about risk, deterrence, and military necessity. They are at their worst when disagreement is recast as bad faith. In 2018, as an outgrowth of a rigorous policy review process, the Trump administration’s Nuclear Posture Review identified a need for supplemental low-yield nuclear capabilities to augment the U.S. nuclear arsenal. This was presented as an effort to raise the nuclear threshold of adversaries who may believe they could employ nuclear weapons in limited ways to escalate their way out of failed or failing co