Assessing the Nuclear Threat in the Context of the Ukraine War

Strategic Argument and Areas of Debate

The Western dismissal of Russian nuclear posturing highlights a critical geopolitical paradox, wherein continuous NATO military assistance to Ukraine persists despite the suspension of the New START agreement and explicit threats of tactical nuclear weapon deployment. This strategic calculation relies heavily on the assumption that the Kremlin’s rhetoric constitutes coercive diplomatic bluffing rather than an immediate prelude to global atomic conflict.

Executive Summary

This paper investigates the escalating nuclear tensions triggered by the Russian invasion of Ukraine, framed by President Vladimir Putin’s controversial suspension of the New START agreement and the subsequent responses from the United States and NATO. It underscores the transition from established nuclear deterrence principles, historically managed by Washington and Moscow, to an increasingly volatile multipolar dynamic heavily influenced by China’s ambiguous geopolitical stance and adherence to a no-first-use doctrine. Despite recurrent Russian threats involving tactical nuclear arsenals and the testing of advanced delivery systems, Western powers continue substantial military aid programmes for Kyiv, perceiving the Kremlin’s rhetoric largely as coercive diplomacy rather than an imminent operational directive. Ultimately, the analysis highlights the erosion of international arms control architecture amidst a high-stakes standoff that threatens the post-Cold War security order.

Analytical Framework and Key Drivers

Evolution of Nuclear Deterrence Theory: The traditional reliance on mutually assured destruction (MAD) is being tested by the normalisation of atomic threats, shifting from Cold War stability toward proactive coercion in the Ukraine conflict.

Erosion of Arms Control Architecture: The abrupt suspension of the New START agreement on February 21, 2023, severely undermines decades of non-proliferation efforts established through the Treaty on the Non-Proliferation of Nuclear Weapons (NPT) and the Comprehensive Nuclear-Test-Ban Treaty (CTBT).

Disparities in Modern Tactical Arsenals: An asymmetric capability gap defines the European theatre, contrasting the deployment of Russian tactical warheads against those held by the United States, some of which are stationed at bases aligned with NATO.

Western Coercive Diplomacy Perceptions: The United States and its NATO allies actively dismiss explicit nuclear intimidation from the Russian Federation, interpreting intermittent military posturing and actions like the Steadfast Noon exercise in October 2022 as calculated bluffs.

Emergence of Three-Way Deterrence: The geopolitical calculus now integrates the strategic ambiguity of China, whose reliance on a no-first-use nuclear doctrine and an agreement from December 5, 2013, serves as a critical moderating factor on Russian aggression.

Strategic Assessment & Empirical Findings

• As of early 2022, the global nuclear inventory reached approximately 12,700 warheads, with the United States and Russia controlling roughly 90 per cent of these assets, possessing 5,428 and 5,977 warheads respectively.
• Global nuclear weapons expenditure surged to $72.6 billion in 2020, with the United States accounting for 52 per cent ($37.4 billion), while NATO’s collective nuclear budget remains about six times higher than equivalent Russian military expenditures.
• Russia maintains a substantial numerical advantage in non-strategic arenas, possessing 1,912 tactical nuclear weapons, compared to the United States’ stockpile of roughly 200, of which approximately 100 are positioned across European allied bases.
• The Kremlin’s nuclear signalling escalated visibly on April 20, 2022, through the test launch of the RS-28 Sarmat intercontinental ballistic missile, aiming to dissuade Western intervention despite subsequent assertions framing the event as a routine procedure.
• Western strategists note that between 20 and 60 per cent of Russian missiles have either misfired or failed to strike intended targets during the conflict, somewhat reducing immediate anxieties regarding the operational reliability of older tactical systems.

Geopolitical Trajectories & Policy Risks

• The suspension of the New START agreement by the Russian Federation risks triggering an unrestrained global arms race, eliminating bilateral verification mechanisms and accelerating systemic nuclear proliferation vulnerabilities outside existing international legal frameworks.
• Sustained military assistance from the United States and the European Union to Ukraine exacerbates the risk of conventional conflict escalation, potentially compelling Moscow to deploy tactical nuclear weapons if its conventional forces face catastrophic battlefield failures.
• The heavy reliance of Russia on China for technological and economic support creates a strategic dependency that restricts the Kremlin’s military autonomy, as violating Beijing’s no-first-use doctrine would likely result in the total diplomatic and economic isolation of the Russian state.

Critical Policy Questions & Responses

Question 1 How does the disparity between Russian and NATO tactical nuclear arsenals influence the escalation dynamics of the Ukraine conflict?

Answer: Russia’s possession of 1,912 tactical nuclear weapons provides Moscow with a significant numerical advantage over the 200 equivalent devices held by the United States, granting the Kremlin a wider array of coercive options for theatre-level battlefield deployment. This asymmetry heightens the strategic vulnerability of European states, particularly considering that approximately 100 American gravity bombs are stationed at NATO installations such as Volkel, Incirlik, and Büchel, placing these allied bases directly within the calculus of a potential regional atomic exchange.

Question 2 Why does the Western security alliance persistently classify Vladimir Putin’s nuclear threats as coercive bluffs rather than imminent operational realities?

Answer: The United States and its European allies interpret Russian nuclear rhetoric through the framework of coercive diplomacy, wherein Moscow’s failure to pair aggressive statements with concrete, rapid mobilisation undermines the absolute credibility of the threats. Furthermore, the massive financial disparity—with NATO allocating a nuclear budget roughly six times higher than Russian military expenditures in 2020—reinforces Western confidence in the continued efficacy of their mutually assured destruction deterrence posture.

Question 3 What strategic trade-offs does the suspension of the New START agreement introduce for global non-proliferation efforts?

Answer: By halting participation in the New START treaty on February 21, 2023, the Russian Federation effectively dismantled the last remaining bilateral arms control verification mechanism with the United States, removing strict verification protocols on deployed strategic warheads. This unilateral withdrawal unravels decades of institutional architecture built alongside the Treaty on the Non-Proliferation of Nuclear Weapons (NPT) and increases the probability of an unmonitored arms race involving unconstrained delivery systems.

Question 4 How does China’s geopolitical posture constrain Russia’s ability to escalate the conflict using non-conventional weapons?

Answer: Despite maintaining a nominal strategic partnership with Moscow, China’s firm adherence to a no-first-use nuclear doctrine and its historical 2013 bilateral agreement promising to shield Ukraine from nuclear intimidation significantly restrict Russian operational freedom. Any deployment of atomic weapons by President Vladimir Putin would fundamentally alienate Beijing, threatening the vital economic and technological supply chains—including the $128 million in semiconductor components exported to Russia in 2022—upon which the Russian state critically depends.

Key Actors and Systemic Dynamics

• Russian Federation → Suspends participation in → New START agreement
• United States → Provides sustained military aid to → Ukraine
• China → Constrains Russian nuclear escalation through → No-first-use nuclear doctrine
• NATO → Demonstrates alliance readiness via → Steadfast Noon exercise
• Treaty on the Non-Proliferation of Nuclear Weapons (NPT) → Regulates global disarmament goals alongside → Comprehensive Nuclear-Test-Ban Treaty (CTBT)
• Vladimir Putin → Utilises coercive diplomacy against → European Union
• Germany → Supports Ukrainian resistance by supplying → Heavy weapons and tanks
• United States → Stations tactical nuclear gravity bombs within → NATO European air bases
• China → Supplies critical aerospace and semiconductor components to → Russian Federation