The Indo-Pacific is rapidly emerging as the central theatre of global strategic competition. Unlike the Cold War in Europe, where nuclear deterrence involved two superpowers across relatively defined front lines, the Indo-Pacific presents a far more complex landscape. The region spans vast maritime distances, multiple potential flashpoints, and several nuclear-armed adversaries. North Korea continues to expand its nuclear and missile programs, China is rapidly increasing both the size and sophistication of its arsenal, and Russia maintains nuclear capabilities alongside a growing strategic presence in the Pacific.

In such an environment, the traditional model of extended deterrence, where the United States alone provides nuclear protection to its allies, may not be sufficient to address the scale and diversity of contingencies across the region. A new framework may be required, an Indo-Pacific nuclear alliance built on shared responsibility, distributed deterrence, and sovereign nuclear capabilities among key allies.

Complicating the adversary: The logic of distributed deterrence

At the core of such an alliance would ideally be sovereign nuclear deterrents for Australia, Japan, and South Korea. This model would resemble the role of the United Kingdom and France within NATO. Both maintain independent nuclear forces and sovereign decision-making, while contributing to the alliance’s broader deterrence posture.

Applying this model to the Indo-Pacific would significantly strengthen deterrence. If Australia, Japan, and South Korea each possessed sovereign nuclear capabilities, adversaries would face a far more complex strategic calculus. Rather than confronting a single decision-maker in Washington, they would need to account for multiple independent governments capable of responding to aggression.

This distributed architecture would complicate adversary planning and raise escalation risks. Any state considering coercion or military action against an Indo-Pacific democracy would have to account not only for the United States, but for several nuclear-capable regional powers with distinct strategic interests and decision-making processes.

Geography reinforces this logic. The Indo-Pacific spans an immense area, from the Korean Peninsula and Taiwan Strait to the South China Sea and the Indian Ocean approaches to Australia. The sheer distance between these theatres makes a purely centralized deterrence model increasingly difficult to sustain.

Flexible Deterrence through forward deployment and hosting

An Indo-Pacific nuclear alliance would therefore require forward deployment and hosting arrangements across the region. Australia, Japan, and South Korea could host a range of nuclear capabilities designed to provide flexible deterrent options across multiple contingencies.

These could include submarine-launched ballistic missiles (SLBM-N) on Ohio- and Columbia-class submarines; nuclear sea-launched cruise missiles (SLCM-N) on Virginia- and AUKUS-class submarines; B83 gravity bombs for platforms such as the B-2 Spirit and B-21 Raider, alongside the rearming of the B-52 Stratofortress and B-1B Lancer; B61 nuclear bombs for the B61 nuclear bombs for aircraft including the B-2, B-21, B-52, and F-35A Lightning II; and Long-Range Stand-Off (LRSO-N) nuclear cruise missiles for the B-21 and B-52. In addition, nuclear warheads could be assigned to land-based, mobile intercontinental ballistic missile (ICBM) launchers.

By dispersing these capabilities across multiple allied territories, the alliance would establish a more resilient and survivable deterrent posture. It would be far more difficult for an adversary to neutralize. Hosting arrangements would also strengthen operational integration among allied forces. As in NATO’s nuclear-sharing model, partner nations could contribute dual-capable platforms capable of delivering nuclear payloads in extreme circumstances.

Australia, Japan, and South Korea could commit to dual-capable submarine (DCS), aircraft (DCA), and land-based missile launcher (DCL) missions within the alliance structure. Dual-capable aircraft would provide visible and flexible deterrence signaling. Submarine-based systems would ensure a survivable second-strike capability across the region’s vast maritime domain. While land-based mobile missile launchers would add a credible and responsive ground-based deterrent, reinforcing the threat of rapid retaliation.

Such arrangements would distribute both responsibility and capability among Indo-Pacific allies, reducing the burden on the United States while strengthening the credibility of deterrence. It would transform the region from one dependent on a single guarantor into a networked system of mutually reinforcing nuclear deterrents.

Why the Philippines should revisit extended nuclear deterrence

An Indo-Pacific nuclear alliance would also require a reassessment of the policies of other regional partners. One notable example is the Philippines. For decades, the Philippines benefited from extended nuclear deterrence under its alliance with the United States. However, that relationship was complicated when the Philippines ratified the Treaty on the Prohibition of Nuclear Weapons (TPNW) in February 2021. By joining a treaty that prohibits the development, possession, and use—or threat of use—of nuclear weapons, the Philippines has distanced itself from reliance on the US nuclear umbrella.
This decision sits uneasily alongside the increasingly contested security environment in the South China Sea. If Manila wishes to strengthen its security relationship with the United States and regional partners, it may need to reconsider its position. Reintegrating into the framework of US extended nuclear deterrence would provide a stronger strategic backstop against coercion or aggression in its maritime domain.

Restoring strategic stability through credible, distributed deterrence architecture

Ultimately, the purpose of an Indo-Pacific nuclear alliance would not be to encourage proliferation for its own sake. Rather, it would be to restore strategic stability in a region where the balance of power is shifting rapidly.

Deterrence works best when it is credible, distributed, and resilient. In a region as vast and strategically complex as the Indo-Pacific, relying on a single nuclear guarantor may no longer provide the level of deterrence required to prevent conflict.

By adopting a model like the United Kingdom and France within NATO, where allied states maintain sovereign nuclear forces while contributing to a broader alliance deterrence posture, Australia, Japan, and South Korea could build a more stable and credible strategic architecture.

Such an arrangement would ensure that any adversary contemplating aggression in the Indo-Pacific would face not one nuclear power, but several, each capable of defending its sovereignty and contributing to the collective security of the region.

Natalie Treloar is the Australian Company Director of Alpha-India Consultancy, a Senior Fellow at the Indo-Pacific Studies Center (IPSC), a Senior Analyst at the National Institute for Deterrence Studies (NIDS), and a member of the Open Nuclear Network. Views expressed in this article are the author’s own.

Beyond a Pacific Defense Pact 4: Blueprint for an Indo-Pacific Nuclear Alliance was originally published on Global Security Review.

As adversaries like China, Iran, North Korea, and Russia expand their arsenals and refine their strategies, the United States faces a stark choice: adapt and strengthen its nuclear posture or risk falling behind in an era of escalating threats. The time for hesitation has passed—reinforcing dominance, closing critical gaps, and securing global stability demands immediate action.

Russia presents the most immediate and multifaceted nuclear threat. Possessing the world’s largest inventory of non-strategic nuclear weapons (NSNW)—an estimated 2,000 warheads. Russia integrated nuclear threats and hypersonic capabilities into conventional military operations, as demonstrated in Ukraine.

With nearly 95 percent of its nuclear triad modernized, Moscow wields a highly flexible and sophisticated arsenal of intercontinental ballistic missiles (ICBM), submarine-launched ballistic missiles (SLBM), strategic bombers, and regional nuclear forces. Its low threshold for nuclear use directly challenges American deterrence credibility, demanding a more dominant regional and global response.

China’s rapid nuclear expansion further upends strategic calculations. By 2025, Beijing’s warhead stockpile surpassed 600 and may well be much larger, with projections suggesting it could double by 2030. Chinese development of road-mobile missiles, ballistic missile submarines, and hypersonic glide vehicles signals an ambition to assert military dominance in the Indo-Pacific. Analysts now warn of an emerging “two-peer” nuclear world, where American US superiority cannot be assumed and extended deterrence in Asia becomes increasingly strained.

North Korea’s evolving nuclear capabilities continue to shape regional security dynamics. With an arsenal exceeding 50 nuclear weapons and advancements in missile survivability, Pyongyang’s strategic posture is increasingly resilient. While its impact remains largely regional, North Korea’s growing ties with Russia, including possible technology transfers and military cooperation, contribute to broader instability in the Indo-Pacific.

Given the United States’ close alliances with Japan, South Korea, and other regional partners, ensuring effective deterrence is crucial. The unpredictability of North Korean decision-making reinforces the need for American capabilities that not only deter conflict but effectively manage escalation dynamics to safeguard stability in the region.

Meanwhile, Iran edges closer to nuclear threshold status, posing a growing challenge to American interests and regional stability. Its advanced enrichment program, expanding missile forces, and deepening military partnerships with Russia alarm both Middle Eastern powers and the broader international community.

Beyond the nuclear threat, Iran’s influence extends across the region, fueling instability through its support for proxy forces in Iraq, Lebanon, Syria, and Yemen. Its control over key maritime chokepoints, including potential disruptions to shipping lanes near the Suez Canal and the Strait of Hormuz, threatens global trade and directly impacts allies that are reliant on energy exports and supply routes. President Trump’s successful bombing of the Houthis has apparently ended that threat to shipping, but the Houthis were but one Iranian proxy.

Heightened tensions with Israel and Sunni Arab nations increases the risk of escalation, raising fears of a nuclear breakout that could spark an arms race across the Middle East. Securing dominance in this theater requires more than rhetoric; it demands credible, layered deterrence, reinforced regional security architectures, and responsive military capabilities.

Despite these growing threats, the current US nuclear posture remains heavily focused on modernizing the strategic triad of ICBMs, SLBMs, and bombers. While essential, this modernization effort falls short of meeting the complex demands of regional deterrence. Delays, budget overruns, and the absence of credible theater-range nuclear options—such as the nuclear sea-launched cruise missile (SLCM-N)—erode deterrence credibility and open dangerous gaps adversaries can exploit.

Reasserting strategic dominance requires closing these vulnerabilities with urgency. The United States must accelerate the development and deployment of theater-range nuclear systems, including the SLCM-N and advanced hypersonic platforms. Modernizing the non-strategic nuclear arsenal will enable the US to counter China and Russia’s flexible regional nuclear strategies with equivalent or superior options.

Hardware alone will not deliver dominance. Integrated operations across nuclear and advanced conventional forces must be enhanced to manage escalation more effectively. Upgrading nuclear command, control, and communication (NC3) systems is critical to ensuring rapid, reliable decision-making and demonstrating resilient deterrent capabilities to adversaries.

Strengthening alliances must be an equally central pillar. Reinforcing extended-deterrence commitments through deeper consultations, expanded joint planning, and forward deployment of theater-range assets can provide vital reassurance to NATO and Indo-Pacific allies. A dominant US nuclear posture must visibly support allied security, preempting adversary coercion and preventing pressures on proliferation among partners.

Diplomatic initiatives must also evolve. Arms control dialogues with China and Russia are necessary, but they must be pursued from a position of strength—not accommodation. Risk-reduction measures, nonproliferation efforts, and regional security dialogues aimed at curbing North Korean and Iranian ambitions remain essential to managing global escalation risks.

Throughout history, the United States repeatedly adapted, asserted leadership, and reshaped global security in response to transformative threats. Today, as geopolitical tensions escalate and adversaries enhance their nuclear capabilities, passive deterrence is no longer enough. America must reaffirm its strategic dominance.

In this new era of competition, strengthening the American nuclear posture is not optional; it is imperative. The nation’s credibility, alliance cohesion, and global influence rest on a posture that deters aggression, assures allies, and prevails in any escalation scenario. As adversaries refine their arsenals, the margin for error diminishes, and hesitation invites instability.

To safeguard peace, security, and American leadership for generations to come, the United States must transition from deterrence to dominance. The time is now to close critical gaps, advance capabilities, and ensure its nuclear forces remain unrivaled in effectiveness and readiness. The future of global stability hinges on this decisive action.

Brandon Toliver, PhD, serves on the A4 staff of Headquarters Air Force. The views expressed are those of the author and do not reflect the official guidance or position of the United States government, the Department of Defense, the United States Air Force, or the United States Space Force.

From Deterrence to Dominance: Strengthening US Nuclear Posture in a Shifting World was originally published on Global Security Review.

A Nuanced Continuity

Harris’ approach to nuclear deterrence will likely continue the multilateral strategy that characterizes the Biden administration. As vice president, she demonstrated a deep commitment to international alliances and a keen understanding of national security. This suggests that a Harris administration will maintain a strong nuclear deterrent as a cornerstone of national defense, while also advocating for arms control and nonproliferation efforts.

Additionally, a Harris administration will benefit from a seasoned foreign policy team. Her national security advisor, Phil Gordon, and his deputy, Rebecca Lissner, are experienced Washington hands who advocate for a balanced approach to American leadership. Their influence will likely steer Harris towards policies that emphasize deterrence without escalation and maintaining a credible nuclear arsenal while pursuing arms reductions.

Modernization with a Purpose

The Biden-Harris administration supports nuclear modernization as a component of national security. This includes updating existing systems and ensuring that the nuclear triad’s land-based missiles, submarine-launched ballistic missiles, and strategic bombers remain effective and secure. Modernization efforts are aimed at addressing the evolving threats posed by adversaries such as China and Russia, who are investing in advanced nuclear capabilities.

Additionally, during her tenure as a senator, Harris endorsed the importance of maintaining a credible nuclear deterrent to prevent adversaries from exploiting perceived weaknesses. Her support for modernization reflects a recognition that technological advancements and evolving geopolitical dynamics necessitate a reliable and secure nuclear arsenal. This perspective aligns with her broader commitment to national defense and security.

Generational Shift in Perspective

Kamala Harris represents a generational shift. Unlike her predecessors, she brings a globalized outlook shaped by her immigrant heritage and diverse experiences. This worldview is likely to influence her approach to nuclear policy, emphasizing the interconnectedness of global security. Harris has frequently spoken about the importance of addressing modern threats such as climate change and human rights, which she sees as intertwined with traditional security concerns. This broader perspective could lead to a more integrated approach to deterrence, considering a wider array of factors influencing global stability.

Engagement with Allies

Harris’s extensive engagement with international partners signals a strong commitment to collective security. Her active participation in high-profile international summits, such as the Munich Security Conference, Asia-Pacific Economic Cooperation (APEC), Association of Southeast Asian Nations (ASEAN) Summit, and the Conference of Paris (COP) climate summit in Dubai, underscores her belief in the power of alliances and multilateral cooperation. Harris has also demonstrated unwavering support for Ukraine in the face of Russian aggression, reflecting her dedication to upholding international norms and supporting allies under threat.

Under her leadership, the US is likely to continue strengthening NATO and other strategic partnerships—presenting a unified front against nuclear threats. Harris’ approach would emphasize the importance of solidarity among allies to ensure that deterrence strategies are robust and effective. Her support for multilateralism suggests she will work closely with allies to enhance deterrence capabilities, sharing intelligence and coordinating military strategies to address potential nuclear challenges.

Moreover, Harris’ experience on the Intelligence and Homeland Security Committees, combined with her background as a prosecutor, equips her with the skills to navigate complex security issues and engage in rigorous policy discussions. This expertise is instrumental in developing nuanced and comprehensive approaches to nuclear deterrence, ensuring that the US and its allies are well-prepared to counter any threats.

Strategic Restraint and Humanitarian Concerns

Harris’ stance on Israel and Gaza underscores her readiness to challenge established policies when humanitarian concerns are prominent. This approach reflects a broader principle that could significantly impact her handling of American nuclear deterrence. Harris’ sensitivity to the human costs of conflict suggests a preference for strategies that go beyond military force. Harris’ focus on humanitarian issues and her critical stance on the conduct of international conflicts indicate that she will prioritize the development of policies that not only ensure national security but also reflect ethical considerations.

Policy Evolution and Public Sentiment

Harris’ approach to nuclear deterrence will also reflect evolving public sentiment, particularly among younger Americans who prioritize issues like climate change and human rights. This demographic shift indicates a growing preference for a security strategy that integrates traditional defense measures with contemporary global challenges.

Her administration could leverage this support to advance comprehensive security policies that address both traditional and emerging threats. This means not only maintaining a credible nuclear deterrent to deter adversaries but also incorporating measures to combat climate change, promote human rights, and address cyber threats. By doing so, Harris can appeal to a new generation of Americans who demand a more holistic and forward-thinking approach to national and global security.

Conclusion

A Kamala Harris presidency may be positioned well to navigate the complexities of nuclear deterrence with a blend of strategic continuity and innovative evolution. Harris’ experience and commitment to multilateralism suggests a firm dedication to maintaining a credible and secure nuclear arsenal while actively pursuing arms control and nonproliferation efforts. Her support for nuclear modernization underscores the necessity of a reliable deterrent in the face of evolving global threats, reflecting a pragmatic approach to national security.

At the same time, Harris offers a generational shift in perspective and emphasis on global interconnectedness. Her focus on integrating humanitarian concerns, strategic restraint, and diplomatic engagement could lead to a more balanced and ethical approach to deterrence. This perspective aligns with her commitment to addressing contemporary global challenges, such as climate change and human rights.

Harris’ extensive international engagement and support for multilateral cooperation highlight her belief in the power of alliances to bolster deterrence and manage nuclear risks. Her administration will likely continue to strengthen NATO and other strategic partners—ensuring that American nuclear policy is both robust and cooperative.

As public sentiment evolves, particularly among younger generations who prioritize a holistic security strategy, Harris’ approach may resonate strongly with voters. By integrating traditional defense measures with contemporary priorities, her presidency may offer a nuanced and forward-thinking approach to nuclear deterrence, addressing both immediate security needs and long-term global stability.

Aaron Holland is a PhD candidate at the University of Utah and an analyst at the National Institute for Deterrence Studies. Views expressed are the author’s own. 

What a Kamala Harris Presidency Means for Deterrence was originally published on Global Security Review.