The Military Technology Revolution Shakes the Wall of Nuclear Deterrence: A Crack in Strategic Immunity
From Ukraine to the Middle East, recent wars and conflicts have exposed an unprecedented challenge to the theory of nuclear deterrence that has shaped the international order for decades.
According to an analysis published by Foreign Affairs, possessing nuclear weapons is no longer sufficient to prevent attacks or protect strategic assets from being targeted, particularly in an era marked by the rise of low-cost drones and precision-guided missiles.
The analysis argues that the world has entered a new phase in which the traditional immunity enjoyed by nuclear powers is gradually eroding, forcing a reassessment of the concepts of security and strategic stability established during the Cold War. Among these is one of the most deeply rooted assumptions in international relations: the belief that nuclear weapons provide strategic immunity to their possessors and deter adversaries from attacking them directly.
A Turning Point
The analysis identifies Ukraine’s “Spider Web” operation as a pivotal moment in this transformation.
In June 2025, Ukrainian security services carried out a bold strike deep inside Russian territory. Operatives infiltrated the country and concealed short-range attack drones inside cargo trucks positioned near several Russian air bases, including facilities in the Amur region near the Chinese border.
Most of these bases housed Russian strategic heavy bombers capable of carrying nuclear weapons.
Using Russia’s mobile telecommunications network, Ukrainian operatives remotely launched the drones and succeeded in destroying at least ten bombers while damaging a total of 41 aircraft, including planes involved in nuclear command-and-control functions, according to Ukrainian estimates.
According to Foreign Affairs, the most significant aspect of the attack was neither its extraordinary cost-effectiveness—one analyst remarked that “a drone costing less than $500 destroyed a strategic bomber worth tens of millions of dollars”—nor the ingenuity of exploiting Russian communications networks. Rather, it was the simple fact that such an attack was possible at all.
For years, Moscow had maintained in its military doctrine that any conventional attack against its strategic assets could provoke a nuclear response. Yet this did not deter Kyiv.
A Transformation in State Doctrine
The Ukrainian operation demonstrated that nuclear deterrence no longer functions as it was traditionally expected to.
For decades, states assumed that possessing nuclear weapons provided the ultimate guarantee of national security.
According to the analysis, many observers argued at the outset of Russia’s military campaign against Ukraine in 2022 that the conflict proved Kyiv had made a mistake when it agreed in 1994 to relinquish the nuclear weapons it inherited from the Soviet Union.
Under this logic, had Ukraine retained nuclear weapons, Russia would never have dared to launch such an invasion. The conclusion appeared straightforward: more states would seek nuclear weapons as insurance against aggression, and such weapons would remain indispensable for deterring dangerous adversaries.
Recent conflicts, however, increasingly suggest the opposite. Ukraine is not only striking targets deep within Russia but is also targeting facilities directly connected to Russia’s nuclear capabilities.
Similarly, India and Pakistan—both nuclear-armed states—engaged in their most dangerous confrontation of the century in May 2025 through cross-border attacks.
In all of these cases, the possibility of nuclear escalation and retaliation did not prevent conventional or hybrid warfare. Instead, both state and non-state actors are increasingly testing the limits of nuclear deterrence and challenging its credibility.
The operation targeted not ordinary military objectives but components of the infrastructure supporting Russia’s nuclear deterrent, including strategic bombers capable of carrying nuclear weapons.
Even more importantly, these strikes were carried out using relatively inexpensive means against assets that form a critical pillar of Russia’s nuclear power.
The Decline of Traditional Deterrence Logic
The analysis explains that throughout the Cold War, the international system rested on a fundamental assumption: nuclear weapons were not merely instruments of war but instruments designed to prevent war itself.
After the United States and the Soviet Union developed arsenals capable of destroying one another many times over, the doctrine of Mutual Assured Destruction emerged. This doctrine held that a large-scale nuclear war would inflict catastrophic losses on both sides, ensuring that neither would initiate such a conflict.
From this principle emerged the concepts of deterrence, strategic stability, and second-strike capability, which became the foundations of great-power military thinking.
For many years, this model was regarded as relatively successful. No direct military confrontation occurred between major nuclear powers despite numerous international crises, and nuclear weapons acquired a reputation as the ultimate guarantor of national security.
According to the analysis, however, the war in Ukraine has exposed the limits of this perception.
The “Spider Web” operation is particularly significant because it demonstrated that a non-nuclear state can strike assets associated with a major nuclear power’s deterrent infrastructure without triggering a direct nuclear response or causing the collapse of the deterrence system itself.
Following the destruction of its strategic bombers, Russia neither resorted to nuclear weapons nor launched a new wave of public nuclear threats. Instead, it responded with a conventional attack on Kyiv involving 400 drones and 40 missiles.
According to the analysis, this outcome represents a major development in understanding the limitations of nuclear power and its ability to constrain adversaries.
The Nuclear Power Paradox
The analysis highlights a striking paradox: nuclear powers remain largely capable of deterring other nuclear powers, yet they are becoming less capable of deterring weaker opponents employing conventional or asymmetric methods.
Russia failed to prevent Ukraine from conducting deep strikes within its territory, while India and Pakistan engaged in dangerous military confrontations despite both possessing nuclear arsenals.
These examples suggest that nuclear weapons do not necessarily prevent limited wars, conventional attacks, or asymmetric operations.
Israel and the Continuing Test
The analysis also examines Israel as another example of this phenomenon.
For decades, Israel relied on a comprehensive deterrence strategy based on military superiority and strategic capabilities.
Nevertheless, deterrence did not prevent the country from facing attacks from multiple sources in recent years, including Hamas and Hezbollah.
The analysis goes even further, suggesting that some attacks targeted sites directly linked to Israel’s nuclear infrastructure, meaning that facilities once considered beyond reach have become part of the battlefield.
Israel responded by strengthening its layered missile-defense architecture, ranging from the Iron Dome to David’s Sling and the Arrow System.
However, a significant challenge remains: the enormous cost disparity between expensive interceptor missiles and the low-cost drones they are designed to defeat.
The Revolution in Military Technology
The analysis emphasizes that one of the most important developments is the role modern technology has played in undermining many longstanding assumptions.
Modern warfare no longer depends solely on large armies or expensive systems. Ukraine has demonstrated that modified commercial drones, loitering munitions, and low-cost precision-guided missiles can generate significant strategic effects.
These tools enable smaller actors with fewer resources to target strategic assets that were once protected by complex defensive layers.
Moreover, the vast gap between the cost of attack and the cost of defense further complicates the strategic equation for major powers.
Deterrence Has Not Completely Collapsed
Despite these developments, the analysis rejects the conclusion that nuclear deterrence has become obsolete.
Relations between the United States and Russia remain largely governed by traditional deterrence logic, and their substantial nuclear arsenals continue to prevent direct confrontation.
For this reason, Washington and Moscow remained careful throughout the Ukraine war to avoid direct military engagement despite their extensive indirect involvement.
Likewise, fears of nuclear escalation continue to motivate major powers to contain crises, as demonstrated during the recent India-Pakistan confrontations.
Is the Solution More Nuclear Weapons?
The analysis raises an important question: will the lessons of these conflicts encourage more countries to pursue nuclear weapons?
It warns against such a conclusion, arguing that recent events do not prove that nuclear weapons prevent conventional wars or attacks. Rather, they merely demonstrate that such weapons raise the stakes of escalation.
The analysis references ongoing debates in countries such as Germany, Poland, Japan, and South Korea regarding the future of nuclear deterrence, while warning that further nuclear proliferation could create new crises instead of solving existing ones.
From Nuclear Deterrence to Resilience
The analysis concludes that the world may be entering a new era in which resilience becomes more important than deterrence itself.
Rather than focusing exclusively on the ability to retaliate with nuclear force, states will need to strengthen their capacity to protect military bases, critical infrastructure, and strategic networks from precision strikes, drones, and other forms of modern warfare.
It also advocates the development of new international norms aimed at limiting attacks on nuclear facilities, whether civilian or military, to prevent conventional strikes from triggering strategic crises or unintended radiological disasters.
The analysis does not argue that nuclear deterrence has collapsed. Rather, it contends that the security environment that enabled deterrence to function effectively for decades is changing rapidly.
Modern warfare has shown that possessing nuclear weapons alone is no longer sufficient to guarantee security or prevent attacks. Nuclear powers must therefore rethink the foundations of their security and defense strategies in a world where strategic assets are increasingly vulnerable to cheaper, more accessible, and more widely available means of warfare.
Finally, the analysis warns against drawing the wrong lessons from current developments. The worst-case scenario, in its view, would be for nuclear powers to continue expanding their arsenals while ignoring emerging conventional threats that may originate from multiple directions, not merely from traditional nuclear rivals.
The analysis concludes that the solution does not lie in acquiring more nuclear weapons. Instead, it lies in understanding the changing nature of conventional warfare and recognizing how drones and ballistic missiles increasingly challenge the central strategic role long occupied by nuclear weapons.
Governments must therefore develop stronger defenses, build more resilient systems to protect their nuclear forces from conventional attacks, and promote international norms that reduce the likelihood of nuclear weapon use and radiological catastrophes.
Only in this way, according to the analysis, can nuclear weapons continue to fulfill their fundamental purpose: deterring other nuclear powers and preventing escalation that could lead to a global catastrophe.
