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*NEW* Public Opinion and the Iran Nuclear Threat: Lessons from the NS 2024 Survey

December 3, 2024

Public Opinion and the Iran Nuclear Threat: Lessons from the NS 2024 Survey

Introduction: The Strategic Importance of Public Opinion on a Nuclear-Armed Iran

As the prospect of a nuclear-armed Iran grows more tangible, the implications for regional stability and global security are profound. Tehran’s potential to develop nuclear weapons poses a direct challenge to U.S. interests and allies in the Middle East while threatening the integrity of the international non-proliferation regime. For a democracy like the United States, public opinion plays a pivotal role in shaping policy responses to this challenge. Understanding how Americans perceive the risks and potential strategies to address Iran’s nuclear ambitions is essential for policymakers and scholars alike. Public attitudes not only influence the feasibility of long-term strategies but also set the boundaries for acceptable action during periods of heightened tension or crisis.

The Iranian Nuclear Challenge

Iran’s nuclear ambitions have long been a focal point of international concern. While Tehran insists its nuclear program is intended for peaceful purposes, such as energy generation, persistent fears of weapons development have shaped global responses for decades. The 2015 Joint Comprehensive Plan of Action (JCPOA) temporarily eased these anxieties by curbing Iran’s enrichment capabilities in exchange for sanctions relief. The U.S. withdrawal from the agreement in 2018 disrupted this fragile balance, prompting Iran to expand its nuclear activities and inch closer to weaponization.

The implications of a nuclear-armed Iran extend far beyond the immediate U.S.-Iran relationship. Such a development could destabilize the already volatile Middle East, embolden Tehran’s regional ambitions, and escalate its rivalry with Israel into a more dangerous phase. Additionally, the emergence of a nuclear-armed Iran risks triggering a broader security dilemma, as regional powers like Saudi Arabia and Turkey may pursue their own nuclear capabilities, creating a cascading arms race. In this high-stakes environment, the potential for miscalculation or conflict becomes an ever-present danger.

The Role of U.S. Public Opinion

In navigating these challenges, U.S. public opinion serves as both a constraint and a guide for policymakers. Historical grievances—such as the 1979 hostage crisis—and recurring regional conflicts have shaped American views of Iran as a persistent adversary. This entrenched perception often translates into widespread support for strong responses to Iran’s nuclear ambitions, ranging from economic sanctions to covert actions.

However, public opinion is far from monolithic. While some Americans support aggressive measures, including military strikes, others favor diplomatic approaches, such as re-entering the JCPOA or negotiating a new agreement. This division reflects broader tensions in the public’s attitudes toward U.S. foreign policy: a desire for decisive action to neutralize threats versus a preference for restraint and multilateralism. Policymakers must carefully navigate these divides, balancing national security imperatives with public preferences while remaining attuned to the domestic political implications of their choices.

The stakes are high. Public opinion not only influences the long-term viability of strategies such as deterrence, sanctions, or diplomacy but also shapes how the U.S. responds in a crisis. A sudden escalation involving Iran—such as the revelation of an operational nuclear weapon or a regional conflict involving Israel—would likely spark intense public pressure for action, constraining leaders’ options and amplifying the urgency of their decisions.

Results from the NS 2024 Survey: Public Perceptions of a Nuclear-Armed Iran

In the most recent iteration of the National Security (NS) Survey, conducted annually by the Institute for Public Policy Research and Analysis at the University of Oklahoma, we examined how Americans perceive the potential threat of a nuclear-armed Iran. This survey, which began in 1993, explores public preferences on key dimensions of national and international security, including nuclear weapons, non-proliferation, and terrorism. The findings from this year’s survey provide important insights into the role of public opinion in shaping U.S. policy responses to Iran’s nuclear ambitions.

Perceived Threat of a Nuclear Iran

Public opinion reflects a pervasive sense of unease about the potential consequences of Iran acquiring nuclear weapons. When asked about the risk of nuclear conflict with Iran within the next decade, assuming Iran becomes a nuclear power, 70% of respondents perceived a moderate or higher threat, with a mean score of 5.62 on an 11-point scale. A notable 9% rated the risk as extreme, while only 2% saw no risk at all.

A graph depicting mean perceptions of the risk of nuclear war over time.

Concerns extend beyond direct conflict. A significant majority (82%, with a mean score of 6.70) believe that a nuclear-armed Iran would likely supply nuclear weapons or materials to terrorist groups, highlighting fears of indirect threats and asymmetric warfare.

A graph showing how individuals rated the risk of Iran providing nuclear weapons or nuclear materials to terrorists.

When it comes to military action, public opinion skews toward support, with half (50%) of respondents favoring unilateral U.S. military action to prevent Iran from developing nuclear weapons. However, there remains a notable segment of neutrality (22%) and opposition (28%), signaling divisions that policymakers must navigate carefully.

Public perception mirrors these dynamics. Nearly 40% of Americans believe that a new Cold War is already underway, while 45% agree that a three-sided nuclear arms race is in progress. Notably, 25% of respondents expressed uncertainty about this arms race, reflecting ambivalence or a lack ofinformation about the evolving nuclear landscape.

Graph showing how respndants reel about using U.S. military forces to compel Iran to abandon its nuclear weapons program.

The perception of regional proliferation adds another layer of concern: 68% of Americans agree that if Iran acquires nuclear weapons, other countries in the region, such as Saudi Arabia or Turkey, would likely pursue their own nuclear programs. This fear of a cascading arms race underscores public recognition of the broader destabilizing effects of Iran’s potential nuclearization.

A graph showing respondents' choices when asked if other countries in the Middle East may pursue their own nuclear weapons programs if the U.S. allows Iran to retain its nuclear weapons.

Implications for US Policy

The 2024 NS survey findings underscore the critical role of public opinion in shaping U.S. policy toward Iran’s nuclear ambitions. Americans’ concerns about nuclear conflict, terrorism, and regional proliferation suggest several key implications for policymakers:

  1. Strengthening Diplomatic Efforts
    Despite public support for military action, there remains significant space for diplomatic engagement. Renewed efforts to negotiate multilateral agreements can address public fears while mitigating the risks of escalation. Policymakers must communicate the value of diplomacy and negotiation as tools to prevent nuclear proliferation and maintain regional stability.
  2. Enhancing Non-Proliferation and Counterterrorism Initiatives
    Public concerns about Iran supplying nuclear materials to terrorists highlight the need for robust counterterrorism and non-proliferation strategies. Strengthening international cooperation to monitor and secure nuclear materials will not only address these fears but also reinforce global norms against nuclear terrorism.
  3. Maintaining Military Readiness and Regional Alliances
    The significant support for military action indicates that Americans see a strong defense posture as essential to deterring Iran and ensuring stability in the Middle East. However, policymakers must balance this readiness with careful management of regional alliances and avoid actions that could exacerbate tensions or provoke broader conflicts.
  4. Addressing Regional Proliferation Risks
    Public recognition of the potential for a regional arms race suggests an opportunity to build support for comprehensive security frameworks that discourage nuclear proliferation in the Middle East. Initiatives that integrate regional partners into broader non-proliferation agreements could reduce the perceived need for nuclear capabilities among neighboring states.

Conclusion

The prospect of a nuclear-armed Iran poses complex and far-reaching challenges for U.S. foreign policy. Public opinion reflects widespread concern about the risks of nuclear conflict, terrorism, and regional instability, underscoring its critical role in shaping U.S. responses. As policymakers navigate these challenges, they must balance strategic imperatives with public sentiment, ensuring that actions are aligned with both national security goals and the values and concerns of the American people. Achieving this balance will require clear communication, effective engagement, and a commitment to addressing the underlying fears and aspirations that shape public views on this pressing issue.