Originally published September 2, 2026. Republished here as part of the author’s canonical professional archive.

Introduction: The Myth of the Usable Atom

The resurgence of interest within defense establishments in “tactical,” sub-strategic, or low-yield nuclear weapons rests on a fundamentally flawed assumption:

  • Nuclear exchange can be calibrated, controlled, and terminated on terms favorable to the aggressor.

Russia’s purported “escalate-to-deescalate” strategy, as seen throughout the Ukraine Conflict(s), has prompted anxieties over revisionist aggression and doctrinal concept reform by Western defense planners that have increasingly advocated for expanded nuclear capabilities in the field. Programs such as the low-yield W76–2 submarine-launched ballistic missile warhead and the persistent push to develop a nuclear-armed Sea-Launched Cruise Missile (SLCM-N) reflect this shift in the institutionalized mindset and calls for more “tailored” nuclear flexibility (Office of the Secretary of Defense [OSD], 2018; Congressional Research Service [CRS], 2024).

The core rationale appears logical on paper:

  • Fielding lower-yield nuclear options, Western planners close a perceived “deterrence gap,” assuming this would deny an adversary the belief that it can execute a limited, sub-strategic strike without inviting a proportional kinetic response.

By treating tactical nuclear weapons as practical instruments of conflict management, it dismantles the foundational architecture of strategic stability and over eight decades of strategic nuclear deterrence policy.

Lowering the threshold for nuclear employment does not bolster deterrence; it heightens the risk of catastrophic miscalculation through ambiguities in dual-use scenarios. Likewise, as mentioned above. it erodes the eight-decade global taboo against nuclear use.

  • No single human being in a policy or strategic decision making position was alive during the last use of nuclear weapons, or has likely seen, in person, the catastrophic results of nuclear detonation and horrifying effects of acute radiation syndrome brought on by over-exposure to ionizing radiation.

The above points to a significant gap in understanding and perspective by those that are not nuclear trained when advocating for the use of nuclear weapons in any capacity. No mentally stable nuclear trained person would passionately call for the use of nuclear weapons due understanding that comes from nuclear training and expertise.

Examining how nuclear signaling has operated in ongoing conflicts, as evidenced in the Ukraine Conflict(s), show how low-yield nuclear arsenals do not stabilize already contested regions; they serve as shields for unprovoked aggression and create ladders of escalation that no military framework can reliably manage.

It is a common point of discussion and contention regarding whether the Ukraine Conflicts and encroachment by the Russian Federation would have occurred had Ukraine kept its nuclear deterrence, or Western allies kept their defense agreements for Ukraine following the removal of Ukraine’s nuclear arms after the collapse of the Soviet Union.

The Discrimination Problem and Dual-Capable Architecture

The central operational vulnerability of tactical nuclear weapons is the “discrimination problem.” In the high-stress environment of an escalating kinetic and modern hybrid conflicts, an adversary’s early-warning satellites and land-based over-the-horizon ISR detect the launch, trajectory, and flight profile of most delivery platform, the Poseidon UUV and other “stealth” platforms being excluded, thus traditional ISR cannot determine its payload or explosive yield capability (Goldston, 2023).

Meaning:

  • Any use of a launch vehicle for a tactical device would be indiscernible by another nations nuclear ISR systems from a non tactical high yield strategic weapon.
  • The consequences of strategic use could be considered an extinction level event (ELE).

When a ballistic or cruise missile is fired from a dual-capable platform, early-warning command systems must assess intent under extreme temporal constraints:

  • Delivery Ambiguity: The deployment of the W76–2 warhead on Trident II D5 submarine-launched ballistic missiles (SLBMs) illustrates this specific structural trap. If a single Trident missile is launched from an Ohio-class submarine carrying a low-yield (~5–8 kiloton) warhead, thus, opposing radars observe the kinematic profile of a strategic intercontinental missile launch. The targeted power cannot know whether the payload is a tactical warhead intended as a limited “warning shot” or a high-yield (90- to 455-kiloton) decapitation strike targeting national command-and-control centers (Kristensen & Korda, 2020).
  • Launch-Under-Attack Pressures: Facing incoming strategic-class delivery vehicles, command doctrines dictate immediate worst-case assessments. A nuclear peer operating under launch-under-attack or launch-on-warning postures faces intense structural pressure to launch a comprehensive counter-strike before its own retaliatory forces are neutralized, completely bypassing the graduated escalation steps envisioned by theater planners.
  • The Cruise Missile Conundrum: Similarly, fielding the SLCM-N aboard attack submarines (such as the Virginia class) or surface combatants blurs the firebreak between conventional theater strikes and nuclear employment (Woolf, 2022). If an adversary cannot distinguish between a conventional Tomahawk land-attack cruise missile and an incoming nuclear-armed cruise missile, conventional strikes against military targets risk triggering nuclear retaliation.

A thinking, feeling, and irrational mammal is at both ends of this exchange, each with their own cultural and individual psychological makeup, along with the entire decision making chain up and down is made up of these thinking, feeling, and irrational human beings. Therefore, predictable and calculable response is certifiably impossible to guarantee.

Key Strategic Dilemmas by System:

W76–2 (Trident II D5 SLBM)

  • Platform: Ohio-class SSBN
  • Estimated Yield: ~5–8 Kilotons
  • Strategic Dilemma: Radar profiles match strategic high-yield warheads (90–455 kt), forcing adversaries into worst-case launch-on-warning retaliation.

SLCM-N (Sea-Launched Cruise Missile)

  • Platform: Attack Submarines / Surface Vessels
  • Estimated Yield: Variable (W80–4/5 derivative)
  • Strategic Dilemma: Introduces conventional-nuclear delivery ambiguity and ties up multi-mission naval assets.

B61–12 (Gravity Bomb)

  • Platform: Dual-Capable Aircraft (F-35A, B-21)
  • Estimated Yield: Selectable (0.3 to 50 Kilotons)
  • Strategic Dilemma: Forward theater deployment increases vulnerability to preemptive strikes and “use-it-or-lose-it” pressures.

The Aggressor’s Shield: Lessons from the Ukraine Conflict

The argument that tactical nuclear weapons provide an indispensable deterrent against revisionist aggression is inverted by the reality of contemporary warfare when compared to modern hybrid/assymetric warfare.

  • Rather than preserving sovereignty or enforcing deterrence, non-strategic nuclear capabilities have served primarily as an offensive shield for revisionist coercion.

Specifically, during the invasion of Ukraine, Russia demonstrated that an expansive theater nuclear stockpile completely alters regional conflicts and nation state aggression to another modernized non-nuclear nation state. Moscow brandished its non-strategic nuclear arsenal and declared elevated readiness postures to establish a zone of operational security from foreign interference. Thus, completely deterring external military intervention on Russian soil or contested regions, while prosecuting a conventional war of conquest (Freedman, 2022).

  • Russian rhetoric surrounding “escalate-to-deescalate”, i.e. the threatening of localized nuclear employment to force the capitulation of Ukrainian forces or deter direct Western conventional involvement, illustrates this precise strategy discussed above, and illustrates how sub-strategic arms embolden aggressor states.

When major powers pursue modernized tactical nuclear warheads under the guise of theater flexibility, they legitimize the concept that nuclear weapons are usable operational tools of enforcing aggressive foreign policy agendas.

If the threshold between conventional defense and nuclear employment is lowered:

  • Aggressors are now incentivized to initiate conflict: A revisionist state can seize territory conventionally and subsequently threaten a sub-strategic nuclear demonstration to freeze the frontlines, daring opposing powers to initiate a high-yield global exchange. This was not the case during the previous World Wars as weapons of mass destruction had not been created. The development, use, and mass production has permanantly altered how nation states wage war, and assess strategic risk.

This also places nation states power projection and national security enforcement into two distinct categories:

  1. Nuclear armed (M.A.D.) nation states.
  2. Non-defensdeable non-nuclear armed states.
  • Allies face proliferation dilemmas: If security guarantees are perceived to hinge entirely on an escalating exchange of low-yield warheads that destroy conflicted region they are meant to defend, non-nuclear allies in Eastern Europe and East Asia are heavily incentivized to pursue indigenous deterrents. Thus, unraveling the Treaty on the Non-Proliferation of Nuclear Weapons (NPT).

The Fallacy of Escalation Control

War-gaming literature and historical operational analysis consistently contradict the premise of managed, sub-strategic nuclear exchanges. Decades of simulations conducted by defense institutions and independent think tanks show that once the operational nuclear threshold is crossed, decision-makers cannot maintain escalation control (Schelling, 1966; Acton, 2020). As stated above regarding the unpredictability of human behaviors in a nuclear exchange.

  • Psychological and Fog-of-War Realities: In simulated crises, the detonation of a nuclear weapon, even one labeled “tactical”, instantly collapses diplomatic off-ramps. The political and psychological shock forces national leadership to demonstrate resolve, compelling retaliatory strikes rather than calculated surrender.

This also illustrates a facet of human psychology that can’t be measured or studied, as also stated above, that no strategic decision maker has witnessed the use of nuclear weapons from an aggressor, and their psychological response cannot be known.

  • The “Low-Yield” Misnomer: The term “low-yield” obscures the entire catastrophic reality of the use of a nuclear device. A 5- to 10-kiloton warhead produces thermal radiation, blast overpressures, and localized radioactive fallout comparable to the bomb dropped on Hiroshima, resulting in massive prompt civilian casualties and rendering all theater logistics inoperable. Labeling these consequences “tactical” is a bureaucratic abstraction that ignores the physical and political realities of nuclear detonation.

The environmental effects of a nuclear detonation such as the release of ionizing radiation, and regional contamination are best seen through the traumatizing effects of the Chernobyl Nuclear Incident. The two use cases are not identical, but nuclear incidents of any kind are wholly unacceptable regardless of the reasons or situations of casuality.

  • Use-It-or-Lose-It Pressures: Forward-deployed tactical nuclear weapons deployed to frontline airbases or surface combatants become priority targets for pre-emptive conventional and/or nuclear strikes. During an escalating standoff, local commanders face severe incentives to employ forward-stationed tactical systems before they are neutralized, compressing the decision cycle and stripping national executives of deliberate command control.

Preserving Strategic Stability: Conventional Superiority Over Nuclear Expansion

Deterring nuclear revisionist aggression does not require adopting the destabilizing nuclear posture of an adversary. Western strategic partners possess overwhelming conventional precision-strike capabilities, multi-domain sensor architectures, and integrated air and missile defense systems capable of inflicting decisive operational defeat without resorting to nuclear use (Biddle, 2021). Alternative means of waging war are accessible, thus the initiation of strategic or tactical nuclear devices should be doctrinally unacceptable methodloiges, regardless of the reasons, for Western nations.

To maintain robust deterrence while preserving the nuclear threshold, policy must focus on strategic clarity:

  1. Retire Redundant Tactical Systems: Congress and the Department of Defense should halt the acquisition of redundant regional systems like the SLCM-N, which strain naval surface-warfare capacity and generate dangerous delivery ambiguity. The strategic triad remains fully capable of existential deterrence.
  2. Reinforce the Conventional-Nuclear Firebreak: Theater war plans must strictly decouple conventional precision-strike platforms from nuclear missions. Eliminating dual-use ambiguities ensures that adversary early-warning nodes do not mistake conventional defense operations for strategic nuclear attacks. The two methodologies are on orders magnitude proportionally different response strategies.
  3. Re-anchor Deterrence in Conventional Credibility: Recent and current lessons from the European theater prove that deterrence fails when conventional readiness, munitions stockpiles, and allied interoperability atrophy. This concept is mutually exclusive from nuclear arsenals lacking fractional yields. Sustaining conventional defense postures in frontline regions provides credible, proportionate denial that does not rely on nuclear escalation.

Nuclear Taboo

The collective norm against any operational use of nuclear weapons since August 1945, has remained the single most effective restraint against global catastrophe (Tannenwald, 2007). Framing tactical nuclear weapons as practical, flexible options for theater war-fighting erodes this restraint, and has unforeseeable, uncontrollable, and cascading global consequences that puts the survival of the species in jeopardy.

A nuclear weapon should never be perceived as “family sized” artillery shell or useable theater asset. Any use of a nuclear device fundamentally collapses strategic stability and opens a floodgate of uncontrolled escalation from which modern civilization has no demonstrated return. There is no going back, and the decision once made, cannot be undone, just like the first and second use of nuclear weapons.

References

  • Acton, J. M. (2020). Is it a nuke? Pre-launch ambiguity and inadvertent escalation. Carnegie Endowment for International Peace.
  • Biddle, S. (2021). Military power: Explaining victory and defeat in modern battle. Princeton University Press.
  • Congressional Research Service. (2024). Nuclear-armed sea-launched cruise missile (SLCM-N) (CRS Report No. IF12434). Library of Congress.
  • Freedman, L. (2022). Command: The politics of military operations from Korea to Ukraine. Oxford University Press.
  • Goldston, R. J. (2023). A new nuclear-armed, sea-launched cruise missile: Just say no. Bulletin of the Atomic Scientists, 79(4), 232–239.
  • Kristensen, H. M., & Korda, M. (2020). United States nuclear forces, 2020. Bulletin of the Atomic Scientists, 76(1), 46–60.
  • Office of the Secretary of Defense. (2018). Nuclear posture review. Department of Defense.
  • Schelling, T. C. (1966). Arms and influence. Yale University Press.
  • Tannenwald, N. (2007). The nuclear taboo: The United States and the non-use of nuclear weapons since 1945. Cambridge University Press.
  • Woolf, A. F. (2022). Nonstrategic nuclear weapons (CRS Report No. RL30345). Congressional Research Service.