The ongoing conflict involving Iran, the United States, and Israel has produced one of the most significant case studies in the evolution of contemporary warfare. Iran, a state that lacks a competitive air force and possesses limited naval power, has demonstrated that ballistic missiles, cruise missiles, and unmanned aerial systems can offset some conventional disadvantages and impose serious costs on technologically superior adversaries. This development is not confined to the battlefield. It represents a doctrinal shift with lasting implications for American deterrence strategy, allied defense planning, and the long-term viability of current U.S. force structures. Understanding what Iran has and has not achieved is essential for making sound policy going forward.

The Cost-Exchange Problem 

At the operational level, Iran’s most consequential contribution has been exposing a structural vulnerability in layered air defense: the cost-exchange dilemma. Systems such as Patriot, THAAD, and Iron Dome were engineered to intercept high-value ballistic and cruise missile threats. When deployed against coordinated waves of low-cost drones and short-range missiles, these systems are forced to expend interceptors valued at hundreds of thousands or millions of dollars per shot against threats that cost a fraction of that amount. The arithmetic is unsustainable at scale. As analysts at the Center for Strategic and International Studies have noted, saturation attacks can exhaust defensive inventories faster than replenishment is possible, creating windows of vulnerability that adversaries are quick to exploit. For the United States, this is not merely a technical problem, it is a strategic one that requires urgent attention in both procurement and doctrine.

The development of the Golden Dome missile defense architecture and expanded investment in directed energy and electronic warfare systems reflect growing official awareness that current interception models are not cost-competitive. These are necessary steps. However, technology alone cannot resolve a dilemma that is fundamentally about the economics of offense versus defense. Adversaries will adapt their tactics faster than procurement cycles can respond unless the U.S. also changes the strategic logic driving their calculations.

Attrition Without Decision: The Limits of the Iranian Model

The Iranian approach has imposed genuine costs on its adversaries, but it has not produced decisive military outcomes. This distinction is critical. Iran’s missile and drone campaigns have disrupted logistics, strained defensive inventories, and created operational uncertainty. They have not, however, defeated U.S. or Israeli military power, seized or held territory, or forced a negotiated settlement on Iranian terms. The model is one of strategic attrition, not strategic victory. Survivability and persistence are not equivalent to effectiveness, and the broader narrative of a drone revolution rendering conventional military power obsolete requires significant qualification.

The claim that air superiority is no longer a necessary condition for strategic effectiveness also warrants scrutiny. Air superiority remains essential for intelligence, surveillance, and reconnaissance; for close air support of ground operations; and for denying adversaries freedom of movement. What Iran’s campaign demonstrates is that a state without air superiority can still impose costs and delay adversary operations—not that air power has been rendered irrelevant. The bar for what air superiority can guarantee has been raised. Its strategic value, however, has not disappeared. Policymakers and analysts should resist the temptation to draw sweeping conclusions from a conflict that remains ongoing and whose full operational record is still emerging.

Implications for American Deterrence

The proliferation of precision strike capabilities across state and non-state actors undermines the assumption that technological overmatch alone is sufficient to deter conflict. When adversaries can field asymmetric capabilities that challenge U.S. and allied defenses at an acceptable cost to themselves, deterrence by denial becomes increasingly difficult to guarantee. The U.S. must prioritize cost-effective interception technologies, particularly directed energy weapons, that can neutralize mass drone and missile attacks without depleting high-value interceptor stocks. This is a resource allocation problem as much as it is an engineering one, and it demands serious engagement at the budgetary and strategic planning levels.

The Iranian model is also exportable, and this may prove to be its most consequential long-term dimension. States with limited defense budgets that are aligned with China or Russia can observe the operational lessons from this conflict and apply them in their own regional contexts. The proliferation of domestically produced or externally transferred missile and drone capabilities across the Middle East, South Asia, and the Indo-Pacific represents a compounding deterrence challenge. American extended deterrence commitments to allies in these regions will become harder to sustain if the cost-exchange problem is not structurally resolved. As Defense News reported, the proliferation of drone technology is already forcing militaries worldwide to reconsider their approach to air and missile defense.

There is also a crisis stability dimension that deserves serious attention. Rapid, sustained missile and drone strikes compress decision-making timelines and increase pressure for early, and potentially disproportionate, responses. In a multipolar environment where multiple actors possess similar strike capabilities, the risk of miscalculation is elevated. The U.S. should pursue updated arms control frameworks and diplomatic mechanisms to manage the proliferation of these systems alongside its technical and procurement investments. Deterrence cannot be reduced to hardware alone.

Conclusion

Iran’s missile and drone campaign has not rewritten the principles of warfare, but it has exposed critical assumptions underpinning American deterrence in ways that cannot be ignored. Distributed, low-cost, high-impact systems are now accessible to a wider range of actors and the gap between offensive capability and defensive cost is widening. The United States requires a

deterrence posture that integrates cost-effective defense, credible offensive options, active non-proliferation diplomacy, and sustained alliance management. Meeting this challenge demands strategic adaptation across doctrine, procurement, and diplomacy, not simply an incremental increase in interceptor production.

Dr. Tahir Mahmood Azad is currently a research scholar at the Department of Politics & International Relations, the University of Reading, UK. Views expressed in this article are the author’s own.

Iran’s Missile-Drone Campaign and Its Implications for the United States’ Deterrence was originally published on Global Security Review.

American allies are unanimous in rejecting extended deterrence that does not include the potential use of nuclear weapons. NFU would give a nuclear-armed adversary, such as Russia, a sanctuary from which to use or threaten to use nuclear weapons. Removing American nuclear forces as a credible deterrent cedes all bargaining power to Moscow, China, and any other would-be nuclear or conventional adversary.

Associated with this campaign is an effort to remove the president’s authority to employ nuclear weapons without at least two additional officials supporting such a decision. They also claim the president would have very little time to decide to retaliate with nuclear weapons, should the US face a nuclear first strike. Of course, ending the president’s “sole authority” would only exacerbate the challenge.

There is a false argument often repeated that American nuclear weapons are on “hair trigger alert” and the president might make a reckless decision to launch, given the assumed minimal time available to determine whether a nuclear response is warranted. It is of course clear how such a decision-making process is significantly impeded if the president must receive concurrence from other officials to make a decision. Such a move reduces the credibility of American deterrence in the minds of adversaries.

Three other factors are also being brought to bear in this campaign to adopt a NFU strategy. First, there is an assertion that the president could be reckless and impetuous and might unnecessarily order the use of nuclear weapons. Second, there is an assertion that a president’s order may be illegal and thus having a “second confirmation authority/opinion” is a good thing. Third, there is an assertion that American deterrence strategy requires the use of nuclear weapons against cities and urban areas—with the objective of killing millions of civilians.

All three assertions are false. The first assertion is belied by the fact that every president understands the dangers of nuclear war. President Donald Trump made several statements to this effect, so the notion he, or any president, would be “reckless and impetuous” does not bear scrutiny. His administration’s major investments in deterrence illustrate the seriousness with which the country seeks to prevent any use of nuclear weapons.

The second assertion on the “illegality” of ordering nuclear use ignores the constitutional role of the president as commander in chief. States wage war regardless of whether the United Nations says it is illegal. Nuclear weapons are merely tools of war. They are not special. They simply pack more explosive energy in a smaller package than a conventional weapon.

The third assertion ignores the Department of Defense Law of War Manual, which explicitly states that attacks against unarmed civilians and non-combatants violate just war principles and are prohibited. American nuclear deterrence strategy explicitly rules out the purposeful targeting of civilian populations and cities, a posture many nuclear abolitionists oppose as they advocate city busting.

Given US deterrence strategy strictly forbids the targeting of cities and civilian populations, there is no basis for believing that carrying out the president’s order to employ weapons will be or be seen as illegal by either civilian or military officials. Thus, there is no need for multiple individuals involved in releasing weapons, all while the president is working through an already compressed and stressful timeline.

A recent “study” by the University of Massachusetts and the Human Security Lab cooked the books by asking both military and civilian officials whether they would oppose an “illegal” presidential order requiring the US to launch nuclear weapons against civilians. Many respondents, having been coached to believe such orders were realistically probable, said they would oppose such orders or at least seek to question the orders. These results were then hijacked to create a false narrative that even military officials now doubt President Trump’s leadership and would not obey the commander in chief if ordered to employ nuclear weapons. Given the survey was conducted during the Israel and US military strikes against Iran, the results were designed to call into question the reasonableness of conventional strikes on Iran.

The campaign to call into question American deterrence policy is based on a willful misrepresentation of states policy and strategic reality. Annie Jacobsen dramatized this misinformation in her book Nuclear War: A Scenario, in which she described US nuclear deterrence strategy as crazy. She proposed jettisoning the use of nuclear weapons for deterrence, whether used first or second, and taking such capability completely off the table. When asked what replacement she recommended, Jacobsen claimed such a question was beyond her expertise.

Leaving the nuclear deterrent off the table is part of a concerted disarmament campaign pushed by nuclear abolitionists. These groups were able to ensure the United Nations passed a treaty that bans nuclear weapons, which is as valuable as a treaty which bans war. While 73 nations signed the treaty, none are nuclear weapons states.

The International Campaign to Abolish Nuclear Weapons is seeking to stop nuclear modernization in the United States, which is strange considering Russia and China are in the midst of major modernization programs. There is nothing less effective than taking a knife to a gunfight, which is exactly what advocates of nuclear disarmament would impose on the free world. For nearly 80 years the US has made sure the nation fields the systems needed to ensure deterrence works. Now is not the time to abandon a successful strategy for the sake of feel-good activism.

Peter Huessy is a Senior Fellow at the National Institute for Deterrence Studies.

The Campaign to End Nuclear Deterrence was originally published on Global Security Review.