Probability of Tactical Nuclear Weapon Use in a US-Israeli Coalition Conflict with Iran: Assessment as of March 18, 2026

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Autore principale: Włodarczyk, Mariusz
Natura: Recurso digital
Lingua:inglese
Pubblicazione: Zenodo 2026
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author Włodarczyk, Mariusz
author_facet Włodarczyk, Mariusz
contents <p>This analysis estimates the probability of tactical nuclear weapon (TNW) use by the US-Israel coalition in the ongoing conflict with Iran, employing a simplified Bayesian odds model with multiplicative OR multipliers for identified input variables. The baseline prior (3% at week 6) is combined with seven structural factors - including interceptor depletion, diversionary escalation, China/Russia signaling, and the Taiwan threat - yielding a raw estimate of 57%, subsequently revised to a realistic range of 25-55% (midpoint ~40%) after sensitivity analysis and red team review. <strong>The assessment identifies escalation mechanisms, trigger scenarios, falsification conditions with a verification schedule, and cascade effects including conditional probabilities of Russian tactical nuclear use in Ukraine (30-50%) and a full nuclear war chain (1-4%). I</strong>nhibiting factors are analyzed qualitatively as binary conditions rather than continuous modifiers<strong>. The document concludes that even conservative estimates place the risk at levels comparable to the 1962 Cuban Missile Crisis, and that the scenario cannot be dismissed as improbable. </strong>The primary value of the analysis lies in identifying variables, mechanisms, and update indicators rather than in specific percentages. This report constitutes an operational supplement to the War-Peace Validator module of the Triptych framework (DOI: 10.5281/zenodo.17219502).<br>This report was originally written in Polish; the English version is a translation.</p>
format Recurso digital
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institution Zenodo
language eng
publishDate 2026
publisher Zenodo
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spellingShingle Probability of Tactical Nuclear Weapon Use in a US-Israeli Coalition Conflict with Iran: Assessment as of March 18, 2026
Włodarczyk, Mariusz
nuclear risk assessment, tactical nuclear weapons, Iran conflict 2026, Bayesian odds model, escalation analysis, scenario analysis, nuclear taboo, proliferation risk, war-peace validation
<p>This analysis estimates the probability of tactical nuclear weapon (TNW) use by the US-Israel coalition in the ongoing conflict with Iran, employing a simplified Bayesian odds model with multiplicative OR multipliers for identified input variables. The baseline prior (3% at week 6) is combined with seven structural factors - including interceptor depletion, diversionary escalation, China/Russia signaling, and the Taiwan threat - yielding a raw estimate of 57%, subsequently revised to a realistic range of 25-55% (midpoint ~40%) after sensitivity analysis and red team review. <strong>The assessment identifies escalation mechanisms, trigger scenarios, falsification conditions with a verification schedule, and cascade effects including conditional probabilities of Russian tactical nuclear use in Ukraine (30-50%) and a full nuclear war chain (1-4%). I</strong>nhibiting factors are analyzed qualitatively as binary conditions rather than continuous modifiers<strong>. The document concludes that even conservative estimates place the risk at levels comparable to the 1962 Cuban Missile Crisis, and that the scenario cannot be dismissed as improbable. </strong>The primary value of the analysis lies in identifying variables, mechanisms, and update indicators rather than in specific percentages. This report constitutes an operational supplement to the War-Peace Validator module of the Triptych framework (DOI: 10.5281/zenodo.17219502).<br>This report was originally written in Polish; the English version is a translation.</p>
title Probability of Tactical Nuclear Weapon Use in a US-Israeli Coalition Conflict with Iran: Assessment as of March 18, 2026
topic nuclear risk assessment, tactical nuclear weapons, Iran conflict 2026, Bayesian odds model, escalation analysis, scenario analysis, nuclear taboo, proliferation risk, war-peace validation
url https://doi.org/10.5281/zenodo.19186539