The Indo-Pacific is entering a period of acute strategic imbalance. China’s rapid military modernization across nuclear, conventional, cyber, and space domains has outpaced the ability of regional powers to respond through traditional force buildup alone. While governments often default to expanding conventional capabilities with more ships, missiles, aircraft, and bases, this approach is slow, expensive, and increasingly insufficient against a peer competitor with both scale and nuclear backing. By contrast, forming an Indo-Pacific nuclear alliance offers a faster, more credible way to close the deterrence gap. 

Crucially, this challenge is not just about China. The region faces a multi-nuclear threat environment that includes an increasingly capable North Korea and a resurgent Russia, willing to use nuclear and conventional signaling to shield conventional aggression. The cumulative effect of these actors compresses decision-making time and raises the stakes of deterrence failure. At its core, the argument is about time, credibility, and strategic effect. 

The Time Problem: Conventional Forces Are Slow to Build 

Modern conventional military capability is not something that can be generated quickly. Building advanced submarines, fifth-generation aircraft, integrated air and missile defense systems, or long-range strike capabilities takes years—often decades. For example. Australia’s plan to acquire nuclear-powered submarines under Pillar I will not deliver operational capability until the late 2030s or early 2040s. As a stopgap. rotational deployments and being considered in the interim. However, these do not fully close the capability gap. 

Similarly, scaling up missile production, hardening bases, and integrating joint command systems across the region require sustained industrial mobilization. Western defense industries, particularly in the United States, are already under strain from commitments in Europe and the Middle East. Expanding production lines for precision munitions or advanced systems is constrained by supply chains, workforce shortages, and political processes. 

In short, conventional rearmament is a long game. The strategic environment in the Indo-Pacific, however, is deteriorating on a much shorter time scale. 

A Multi-Nuclear Threat Environment 

Focusing solely on China understates the scale of the challenge. The Indo-Pacific is increasingly shaped by three distinct nuclear pressures: 

• China is expanding and diversifying its nuclear arsenal at a pace not seen in decades, while integrating it more closely with conventional operations. 
• North Korea continues to refine its nuclear weapons and delivery systems, including intercontinental ballistic missiles capable of reaching the United States and regional allies. Kim Jong Un has also signaled a lower threshold for potential nuclear use in a crisis. 
• Russia, while geographically more distant, remains an Indo-Pacific actor through its Far East presence and strategic alignment with China. Its behavior during the war in Ukraine under the shadow of nuclear threats demonstrates how nuclear coercion can enable prolonged conventional conflict. 

This layered nuclear environment complicates deterrence. It is no longer about balancing a single adversary, but managing overlapping deterrence relationships, where escalation in one theater can have cascading effects in another. 

The Deterrence Gap: Nuclear-Backed Coercion 

China’s growing nuclear arsenal fundamentally alters the deterrence equation. While conventional forces can impose costs, they cannot fully offset the coercive power of nuclear weapons. Beijing can leverage its nuclear capabilities to deter external intervention in a regional conflict, particularly over Taiwan, while using conventional forces to achieve fait accompli. North Korea adds a different kind of instability. It has a smaller but less predictable nuclear force, with a demonstrated willingness to engage in brinkmanship. Meanwhile, Russia’s nuclear posture reinforces a broader norm, that nuclear weapons can be used to shield aggression and shape adversary behavior via threats of use. 

This creates a deterrence asymmetry: regional states may possess capable conventional forces, but without nuclear backing, their ability to deter escalation is limited. The United States provides extended nuclear deterrence, but questions about credibility, response timelines, and escalation risks persist, especially as adversaries develop capabilities to target bases in the United States and nuclear command, control, and communications (NC3) systems. 

The Speed Advantage of a Nuclear Alliance 

A nuclear alliance can be established far more rapidly than building conventional parity. Unlike ships or aircraft, nuclear deterrence is not primarily about quantity. Instead, it is about credibility, survivability, and signaling. 

Consider NATO. Its nuclear sharing arrangements allows non-nuclear members to participate in nuclear planning, host nuclear weapons, and integrate delivery systems without developing their own arsenals. This framework was established quickly during the Cold War and endured for decades as a cornerstone of deterrence. 

An Indo-Pacific equivalent could replicate key elements of such an arrangement: 

• Forward deployment or rotational presence of U.S. nuclear-capable assets 
• Nuclear-sharing arrangements with trusted allies such as Japan, South Korea, and potentially Australia 
• Integrated nuclear-planning mechanisms to ensure regional input into deterrence strategy 
• Hardened and distributed basing to enhance survivability 

These steps do not require decades of industrial buildup. They rely on political decisions, alliance coordination, and doctrinal integration. These are areas where progress can be made over years, not decades. 

Credibility Through Integration 

Deterrence is about perception. Adversaries must believe that the costs of aggression will outweigh the benefits. A nuclear alliance enhances credibility in several ways. 

First, it raises the stakes of conflict. If multiple states are integrated into a nuclear deterrence framework, any aggression risks broader escalation. This complicates an adversary’s planning and reduces the likelihood of limited, opportunistic actions. 

Second, it distributes risk and responsibility. Extended deterrence is more credible when allies are actively involved in nuclear planning and posture. This reduces doubts about whether the United States would act alone in a crisis. 

Third, it signals resolve and unity. Formalizing nuclear cooperation sends a clear message, that the region is prepared to escalate, if necessary, rather than relying solely on conventional responses that may be insufficient. 

Cost and Efficiency 

Conventional rearmament is not only slow, but it is extraordinarily expensive. Building fleets of advanced platforms, sustaining them, and integrating them into joint operations imposes massive fiscal burdens. 

A nuclear alliance, by contrast, leverages existing capabilities. The United States already possesses a robust nuclear arsenal and delivery systems. The marginal cost of extending deterrence through alliance structures is significantly lower than building new conventional forces from scratch. 

For middle powers like Australia, Japan, and South Korea, this is particularly important. Attempting to match China’s conventional military growth is economically unsustainable, let alone simultaneously accounting for North Korean and Russian contingencies. A nuclear alliance provides a cost-effective way to achieve strategic balance across these multiple threats. 

Addressing Political and Normative Challenges 

Of course, forming a nuclear alliance in the Indo-Pacific is not without challenges. Non-proliferation norms, domestic political sensitivities, and regional perceptions all complicate the issue. Countries like Japan have strong anti-nuclear culture which is shaped by history. Australia has long positioned itself as a supporter of non-proliferation. Any move toward nuclear sharing or hosting would require careful political management and public communication. 

However, these constraints are not insurmountable. NATO demonstrates that nuclear sharing can coexist with non-proliferation commitments under the Nuclear Non-Proliferation Treaty framework. The key is transparency, adherence to legal obligations, and a clear defensive rationale. Moreover, the strategic environment is changing. As the combined pressures from China, North Korea, and Russia intensify, the political calculus around deterrence may shift accordingly. 

Complement, Not Replacement 

A nuclear alliance is not a substitute for conventional forces. Rather, it is a force multiplier. Conventional capabilities remain essential for day-to-day operations, crisis management, and limited conflicts. 

However, without credible nuclear backing, conventional forces risk being outmatched in scenarios where nuclear-armed adversaries control escalation. The most effective approach is a layered deterrence strategy: 

• Nuclear deterrence to prevent large-scale war and coercion 
• Conventional forces to deny and punish aggression 
• Resilience measures to ensure continuity under attack 

A nuclear alliance strengthens the top layer of this structure, enabling the others to function more effectively across multiple threat vectors. 

Conclusion: Speed Matters in a Multi-Threat Era 

The Indo-Pacific does not have the luxury of time or the simplicity of a single adversary. Conventional rearmament, while necessary, cannot close the deterrence gap quickly enough to match the pace of strategic change driven by China, North Korea, and Russia. 

An Indo-Pacific nuclear alliance offers a faster path to credible deterrence. By leveraging existing capabilities, enhancing integration, and signaling resolve, it can stabilize the regional balance in the near term, while stalling for longer-term conventional investments to mature.  

The choice is not between nuclear and conventional approaches, but between acting quickly or falling behind. In a rapidly shifting, multi-nuclear strategic environment, speed is not just an advantage. It is a necessity. 

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 are the author’s own.

An Indo-Pacific Nuclear Alliance Closes the Deterrence Gap Faster than Conventional was originally published on Global Security Review.

The failure of the U.S.-Iran negotiations that took place in Pakistan marks a decisive inflection point in the current Middle Eastern security course. This is not a diplomatic setback; it is the transition from a fragile de-escalation phase into a more volatile period defined by coercive pressure, military signaling, and elevated risk of miscalculation. This risk is driven by the threat Iran continues to pose to freedom of navigation in the Strait of Hormuz and by its remaining ballistic capabilities, which allow it to erratically target neighboring Arab states and regional U.S. allies.

Furthermore, the announcement of a U.S.-led maritime blockade over Iranian ports fundamentally alters the operational and strategic landscape aimed at confining the Iranian threat. The main question now is no longer whether tensions will rise, they already have, but whether the current trajectory leads toward controlled escalation, negotiated recalibration, or systemic full-scale conflict.

Structural Drivers of Escalation

At the core of the U.S.-Iran negotiations lies a set of structural but irreconcilable objectives. The U.S. continues to frame its demands around three pillars: curtailment of Iran’s nuclear development program, limitations on ballistic missile capabilities development, and the rollback of Iran’s regional proxy networks. Iran, on the opposite side, views these elements as essential to regime survival and sovereign deterrence. Accordingly, this is not a negotiation gap; it is a strategic contradiction.

Iran’s nuclear posture has evolved from a bargaining chip into a core pillar of the Iran’s Islamic Revolutionary Guard Corps’ (IRGC) and the regime’s survival. Any perceived concession risks undermining internal legitimacy and external deterrence credibility. Accordingly, ongoing diplomatic negotiations are performative rather than transformative, thus aimed at managing escalation rather than resolving underlying disputes. Additionally, the U.S. decision to impose a maritime blockade represents a calibrated escalation designed to exert economic and psychological pressure without the need to immediately resort back to kinetic operations. However, the strategic implications are profound.

Iran’s economy relies mainly on maritime oil exports. A blockade directly targets this vulnerability, threatening revenue streams, which then impacts the domestic stability, in addition to regional influence operations funded through such revenues. From Tehran’s perspective, failure to respond would signal weakness not only to the U.S. but also to its network of non-state groups across the region. This creates a classic escalation dilemma for Iran. On one hand, not responding risks strategic erosion of the IRGC and the current regime’s image. On the other hand, the response risks triggering military confrontation, which Iran cannot withstand. In such conditions, even any Iranian action such as harassment of commercial shipping, or proxy attacks carry a high probability of escalation.

Another key driver for the escalation is the pre-positioned military capabilities. Unlike previous crises, the current environment is characterized by pre-positioned military assets and operational readiness on both sides. U.S. naval, air, and ground forces in the Middle East are already configured for rapid response operations, while Iran’s IRGC maintains asymmetric capabilities are carefully tailored for maritime disruption, drone attacks, ballistic missile launches, and regional proxy warfare.

Regional Spillover Risks

The Strait of Hormuz remains the most critical geographic variable in this confrontational equation given that one-fifth of global oil trade passes through this narrow waterway. Iran has long signaled its capability and strategic intent to disrupt traffic through asymmetric means, including naval mines, drones, and anti-ship missiles. While full closure remains unlikely due to the overwhelming U.S. response it would provoke, disruption has already been taking place via targeted attacks on passing vessels, which is more than enough to deter commercial liners. Even limited interference could generate outsized economic and political effects, particularly for energy-dependent economies. All that said, the Houthis in Yemen remain on standby mode to disrupt the maritime flow via resumption of attacks on vessels passing via Bab-el Mandeb to and from the Red Sea.

Iran’s strategic depth lies not in conventional military parity but in its network of regional proxies. Groups aligned with Tehran, including those in Iraq, Syria, Lebanon, and Yemen, provide Iran with operational flexibility. Given Israel’s successful campaign in Lebanon against Hezbollah as well as the Iran-backed Iraqi militias preoccupied with the deterrence posed by the U.S. forces, the Houthis in Yemen remain the final card for Tehran. Intensified maritime threats from Houthi forces in the Red Sea are likely to reemerge at any moment. This allows Iran to impose costs on U.S. and allied interests without triggering immediate large-scale retaliation. However, the cumulative effect of a multi-chokepoint pressure strategy could compel a broader and internationally supported response.

Strategic Calculus: War vs. Controlled Escalation

Some believe that neither the U.S. nor Iran appears to seek full-scale war given that the costs (military, economic, and political) would be immense and unpredictable. For the U.S., a major conflict with Iran would disrupt global energy markets, divert resources from strategic competition with China, and risk regional destabilization affecting key allies in the Gulf Corporation Council (GCC). For Iran, a continuation of a direct war would expose critical infrastructure to sustained strikes and threaten regime survivability.

The most probable scenario over the next 2–3 weeks is a phase of controlled escalation characterized by maritime harassment incidents in the Gulf, limited proxy attacks, and intensified rhetoric and signaling. This scenario allows both sides to demonstrate resolve while avoiding irreversible steps toward war. However, it is susceptible to disruption by unforeseen incidents at any moment.

An increasingly possible scenario would be one that involves targeted military actions, such as U.S. strikes on IRGC assets or critical infrastructure vs. Iranian retaliatory indiscriminate strikes on U.S. regional allies. Such exchanges would likely be calibrated to avoid full-scale war but could easily escalate if casualties or strategic assets are impacted.

Lastly, a less likely but still possible scenario is the return to productive negotiations, driven by economic pressures including oil market volatility, as well as diplomatic intervention by third parties, including the Gulf states, China, or European actors.

The highest-impact and most consequential scenarios involve a rapid escalation into full-scale conflict, potentially triggered by Iran’s full refusal to give up on its nuclear program or ballistic missile development program. Other triggers for a full-scale conflict would include any major incident in the Strait of Hormuz, high-casualty attacks on U.S. forces, or a direct confrontation between U.S. and Iranian military assets. Such a conflict would likely expand beyond bilateral engagement, drawing in regional actors and severely disrupting global economic systems.

Key Indicators to Watch

Several indicators are going to be crucial in assessing the trajectory of the ongoing conflict. This includes maritime activity where increased Iranian harassment of shipping continues to take place. Proxy operations are also a critical indicator where the frequency and intensity of proxy attacks, and the Red Sea specifically start to rise. Finally, force posture changes remain one of the key indicators, as they are mostly based on advanced intelligence assessments, which are not available to the public or markets. That said, deployment of additional U.S. and allied assets to the region remains the clearest indicator of how the situation will move forward and provides early signs of shifts from controlled escalation to broader conflict.

For defense strategists, the imperative is clear: preparing for escalation, planning for contingencies across multiple theaters, and achieving consensus that in the current environment, the most dangerous outcomes are not those that are intended but those unintended.

Dr. Mohamed ELDoh is a business development and consulting professional in the defense and security sector. Mohamed holds a Doctorate degree from Grenoble École de Management – France, an MBA from the EU Business School- Spain, and an Advanced Certificate in Counterterrorism Studies from the University of St Andrews, UK. He regularly authors articles addressing defense cooperation, counterterrorism, geopolitics, and emerging security threats in the Middle East and Africa. The views of the author are his own.

The Escalation Trajectory of U.S.-Iran Tensions After the Collapse of the Negotiations was originally published on Global Security Review.

The simulated conflict ended without regime change in Pyongyang, allowing Kim Jong Un to claim a political victory. While avoiding nuclear escalation may seem prudent, such an outcome could deal a lasting blow to the credibility of America’s extended deterrence in East Asia.

The Guardian Tiger scenario should not be dismissed as an academic exercise. It reveals a critical vulnerability in the psychological foundation of deterrence: the perception among adversaries and allies of American willingness to use nuclear weapons in defense of its partners. If allies conclude that Washington will not cross the nuclear threshold even after a nuclear attack, they may question the value of the nuclear umbrella. Adversaries, meanwhile, may learn that nuclear coercion, carefully calibrated, can succeed.

In the simulation, North Korea escalated to a tactical nuclear strike against a South Korean Navy destroyer in the East Sea (Guardian Tiger I) and later against the Chinhae naval base (Guardian Tiger II), home to the Republic of Korea Navy’s Submarine Force Command and occasionally used for allied submarine visits. According to the report, American leaders debated nuclear retaliation but settled on conventional “pulsed” strikes.

In a real-world scenario, such strikes could plausibly involve precision-guided munitions from long-range bombers like the B1-B and Tomahawk cruise missiles launched from Arleigh Burke-class destroyers, aimed at targets such as missile transporter-erector launchers, hardened artillery positions along the DMZ, and command-and-control facilities near Pyongyang. In the exercise, the US stopped short of regime change, seeking to avoid further nuclear escalation and prevent a direct war with China—a decision that would have allowed Pyongyang to absorb the damage, count the survival of its regime as a strategic win, and enter negotiations from a stronger position.

Extended deterrence depends on more than military capability. It is rooted in the belief, shared by allies and adversaries alike, that the United States is willing to defend its partners by all means necessary, including nuclear weapons. An American failure to respond in kind to North Korean nuclear use would plant seeds of doubt. Japanese and South Korean leaders could begin to question whether Washington would truly “trade Los Angeles for Tokyo or Seoul” if the stakes involved limited nuclear use rather than an existential threat to the United States.

That doubt could trigger cascading effects. Calls in Seoul’s National Assembly for indigenous nuclear weapons, expanded production of the Hyunmoo‑4 ballistic missile, and pressure on Tokyo to more seriously pursue nuclear sharing arrangements have already entered the political debate.

This concern is amplified by North Korea’s 2022 nuclear weapons law, which openly authorizes preemptive nuclear strikes in scenarios ranging from an imminent attack on leadership to undefined overwhelming crisis situations. Analysts note that the law’s language effectively lowers the threshold for nuclear use, implying tactical employment to repel invasion and seize the initiative in war. Rather than viewing nuclear use as a desperate last resort, Pyongyang now appears willing to employ such weapons early. For example, a low‑yield detonation against South Korean or American forward-deployed forces to shock Washington and Seoul into political concessions.

The challenge grows sharper in the event of a dual contingency: simultaneous crises on the Korean Peninsula and in the Taiwan Strait. Guardian Tiger II simulated such a scenario, with China launching a multi-domain assault on Taiwan while North Korea escalated on the peninsula. In such a real-world situation, US Indo-Pacific Command could be forced to divert the USS Ronald Reagan Carrier Strike Group from Yokosuka to the waters east of Taiwan, deploy B‑52H bombers to deter Chinese operations, and even consider repositioning some Terminal High Altitude Area Defense and Patriot missile defense batteries from South Korea to protect American assets in Okinawa and Guam.

Such shifts illustrate how a stretched American posture could reduce missile interception capacity on the peninsula and temporarily remove some nuclear-capable platforms from immediate Korean defense. North Korea could calculate that Washington, already balancing a larger confrontation with China, would avoid nuclear escalation in Korea to conserve resources and limit the risk of an all-out US-China war.

The political and strategic consequences would ripple across the region. In Seoul, public and elite opinion could shift sharply toward developing an independent nuclear arsenal—something 71 percent of South Koreans already support. South Korea’s nuclear latency, widely assessed by proliferation experts, suggests it could potentially produce a weapon in as little as 6 months if political consensus formed.

In Tokyo, the debate over counterstrike capabilities, missile defense expansion, and potential nuclear sharing with the United States would intensify, potentially accelerating deployment of Tomahawk missiles and further integration of F‑35A fighters, which, in the US fleet, are being certified for B61‑12 nuclear bombs, into allied defense planning. Beijing, meanwhile, could seize the opportunity to position itself as a stabilizing broker, offering to mediate between Seoul and Pyongyang while shielding the latter from full international accountability, further eroding American influence.

Avoiding nuclear escalation in a limited-strike scenario is understandable, but Washington cannot afford such a decision to be interpreted as weakness. Strengthening deterrence credibility in Northeast Asia will require more than declaratory statements. Clear and credible red lines for nuclear use must be communicated both publicly and privately. Integrated nuclear-conventional planning with allies should ensure that flexible response options, from proportionate nuclear strikes to overwhelming conventional retaliation, are executable on short notice. Contingency planning must explicitly account for simultaneous conflicts in Korea and Taiwan, with pre-positioned munitions, dispersed basing arrangements for nuclear-capable aircraft, and rotational deployments of dual-capable ships and submarines to maintain strategic presence even under force diversion.

Equally important is sustained alliance signaling. These include high-visibility joint exercises like the US-ROK Freedom Shield exercises, regular port visits by nuclear-capable submarines, and trilateral missile tracking drills with Japan. These measures reassure allies, complicate adversary calculations, and demonstrate that any nuclear use will incur unacceptable costs.

The Guardian Tiger exercises are valuable not because they predict the future, but because they reveal how quickly deterrence can fray in the fog of crisis. A single decision to refrain from nuclear retaliation, however understandable at the time, could reverberate for decades and reshape the strategic balance in East Asia. In the nuclear age, preserving deterrence means guarding against both uncontrolled escalation and the perceptions of hesitation that could invite it.

Dr. Ju Hyung Kim, President of the Security Management Institute, a defense think tank affiliated with the South Korean National Assembly, is currently adapting his doctoral dissertation, “Japan’s Security Contribution to South Korea, 1950 to 2023,” into a book.

A Nuclear Umbrella in Peril: Lessons from North Korea’s Escalation Scenarios was originally published on Global Security Review.