71. The imperative of augmenting US theater nuclear forces
- Author:
- Greg Weaver
- Publication Date:
- 04-2025
- Content Type:
- Special Report
- Institution:
- Atlantic Council
- Abstract:
- The United States and its allies and partners face an impending change in the threats posed by nuclear-armed adversaries: a strategic environment marked by two nuclear peer major powers. Russia, long a nuclear peer of the United States, will likely emerge from the war in Ukraine—regardless of how it ends—even more reliant on its nuclear forces, which are already the largest in the world. Meanwhile, China is undertaking the largest nuclear force buildup since the Cold War. That buildup will increase the size of Beijing’s nuclear forces by roughly seven and a half times since 2018, positioning China as a nuclear peer of the United States by 2035.1 Meanwhile, North Korea continues to expand and diversify its nuclear arsenal. Although the North Korean threat has been somewhat constrained by the quality of its ballistic missile systems—particularly its intercontinental ballistic missiles (ICBMs)—technical assistance from Russia, in exchange for Kim Jong Un’s material support for the war in Ukraine, could rapidly enhance North Korean capabilities. Finally, the ongoing conflict in the Middle East could prompt Iran to choose to acquire its own nuclear arsenal, presenting a wholly new challenge. A pair of recent analyses of the strategic impact of this two-nuclear-peer environment have sounded an alarm, making clear that this environment poses a qualitatively and quantitatively new threat of adversary aggression and the potential for nuclear war.2 Conducted by bipartisan teams of former senior US officials and other nuclear experts, both analyses concluded—in the words of the Congressional Commission on the Strategic Posture of the United States (hereafter referred to as the Strategic Posture Commission)—that the planned US nuclear force “is absolutely essential, although not sufficient [emphasis added] to meet the new threats posed by Russia and China.”3 Both reports emphasized the urgent need to enhance US theater nuclear forces to address the most likely path to large-scale nuclear war: the failure to deter or counter limited adversary nuclear use in an ongoing conventional conflict. Finally, both reports laid out a set of attributes that US theater nuclear force enhancements must possess to effectively address the threat of limited nuclear escalation. However, these reports did not examine in depth the deterrence and warfighting implications of alternative new US theater nuclear systems. This paper examines why the two-nuclear-peer threat makes the enhancement of US theater nuclear forces an urgent imperative. It explains why the planned US strategic and theater nuclear forces are insufficient to address this threat. The paper then presents a more detailed set of political-military and operational attributes that enhanced US theater nuclear forces must possess to effectively counter the threat. Using these attributes, it evaluates the relative deterrence and warfighting value of various potential alternative theater-range nuclear weapon systems. The paper concludes with a recommended future US theater nuclear force structure and posture, specifically, that the United States should field a theater nuclear force that combines an effectively dispersible dual-capable fighter aircraft (DCA) force in Europe with nuclear-armed sea-launched cruise missile (SLCM-Ns) deployed day-to-day on attack submarines (SSNs) in Europe and Asia and ground-launched cruise missiles (GLCM-Ns) and/or ground-launched ballistic missiles (GLBM-Ns) continuously deployed in Europe and/or Asia.
- Topic:
- Defense Policy, Nuclear Weapons, and Deterrence
- Political Geography:
- Europe, North America, United States of America, and Indo-Pacific