Strategic competition in the Indo-Pacific increasingly occurs in the grey zone, the space between routine statecraft and open armed conflict. China, North Korea, Russia, and Iran employ a range of coercive tactics designed to alter the strategic environment without triggering a conventional military response. These activities include cyber operations, maritime harassment, disinformation campaigns, economic coercion, and limited military provocations. Because these actions remain deliberately below the threshold of war, they often exploit the reluctance of states to respond with force. As grey zone competition intensifies, the question confronting policymakers is not only how to deter such activities, but also how to ensure that responses to them are credible. In this context, a nuclear alliance could serve as the ultimate strategic backstop for military responses to persistent grey zone coercion.

Grey zone strategies rely heavily on ambiguity and escalation management. The states that employ these tactics understand that their adversaries—particularly democratic states—are cautious about escalating disputes into major military confrontations. By operating just below the threshold of armed conflict, grey zone actors seek to gradually erode the strategic position of their opponents while avoiding a decisive response. Maritime coercion in disputed waters, persistent airspace incursions, cyber intrusions, and limited military demonstrations all serve this purpose. Over time, these actions can reshape the operational environment, undermine alliances, and weaken the credibility of deterrence.

The difficulty lies in crafting responses that are both proportionate and credible. Conventional military responses to grey zone activities risk escalating a crisis if they are perceived as excessive, yet insufficient responses can embolden further coercion. This dilemma has led analysts to argue that deterrence in the grey zone requires a layered approach that combines political, economic, and military tools. However, even robust conventional responses may prove insufficient if adversaries believe that escalation dominance ultimately rests in their favor. It is in this context that nuclear deterrence retains enduring strategic relevance.

A nuclear alliance would not be designed to deter grey zone activities directly. Nuclear weapons are instruments of last resort intended to deter existential threats and large-scale conventional aggression. Nevertheless, the presence of a credible nuclear backstop fundamentally shapes the broader strategic environment in which grey zone competition occurs. By reinforcing the credibility of allied military responses, nuclear deterrence can prevent grey zone crises from escalating into major wars while simultaneously discouraging adversaries from testing the limits of conventional deterrence.

In practical terms, a nuclear alliance would strengthen escalation management in the Indo-Pacific. If regional states believed that their security rested on a collective nuclear deterrent, they would be better positioned to respond firmly to grey zone provocations. Maritime patrols, cyber countermeasures, and limited military deployments could be undertaken with greater confidence that adversaries would hesitate to escalate beyond the conventional level. In this sense, nuclear deterrence functions as a strategic umbrella under which lower-level military responses can occur without triggering uncontrolled escalation.

The experience of the Cold War offers a useful historical precedent. During that period, the North Atlantic Treaty Organization relied on nuclear deterrence to prevent large-scale aggression by the Soviet Union while simultaneously engaging in conventional competition across multiple domains. Although grey zone tactics—including espionage, proxy conflicts, and political interference—were common, the presence of a credible nuclear deterrent helped ensure that such competition did not escalate into direct war between nuclear powers. A similar logic could apply in the Indo-Pacific today.

In the contemporary regional context, a nuclear alliance could involve close coordination among the United States and key Indo-Pacific partners. Such an arrangement would not necessarily require the proliferation of nuclear weapons. Instead, it could mirror existing extended deterrence frameworks in which nuclear-armed states provide security guarantees to non-nuclear allies while maintaining operational control over nuclear forces. Through mechanisms such as joint planning, strategic consultation, and integrated command structures, allied states could strengthen the credibility of collective deterrence without undermining existing non-proliferation commitments.

Importantly, a nuclear backstop would also reinforce political resolve among allied states. Grey zone strategies often aim to exploit divisions within alliances by testing whether partners will respond collectively to incremental coercion. If adversaries perceive hesitation or disunity, they may conclude that the risks of escalation are manageable. A formal nuclear alliance could signal a high level of strategic commitment among participating states, thereby increasing the perceived costs of continued grey zone pressure.

Critics may argue that linking nuclear deterrence to grey zone competition risks lowering the nuclear threshold or introducing unnecessary escalation dynamics. These concerns highlight the importance of clearly defining the role of nuclear weapons within a broader deterrence framework. The objective would not be to threaten nuclear retaliation for minor provocations, but rather to ensure that adversaries understand that attempts to escalate beyond the grey zone could encounter a unified and credible deterrent response. In this sense, nuclear deterrence functions as a stabilizing force that sets clear limits on how far coercion can be pushed.

As the Indo-Pacific becomes the central arena of strategic competition, the persistence of grey zone tactics will continue to test existing security arrangements. States that rely solely on conventional responses may find themselves locked in a cycle of incremental coercion that gradually shifts the balance of power. By contrast, a nuclear alliance would provide a strategic foundation that reinforces the credibility of allied military responses across the escalation spectrum.

Ultimately, understanding grey zone actors and the tactics they employ is essential for effective deterrence. Yet deterrence also requires credible escalation management and the assurance that adversaries cannot exploit the space between peace and war indefinitely. In the Indo-Pacific, a carefully structured nuclear alliance could provide the strategic backstop necessary to ensure that responses to grey zone coercion remain both credible and effective while preventing escalation into catastrophic conflict.

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 3: A Nuclear Alliance as the Ultimate Backstop to Grey Zone Coercion was originally published on Global Security Review.

(Editor’s Note: This article was submitted before the U.S.-Iran conflict began. We intentionally left the article as “forward looking” to signify the value of the analysis.) 

After successful US regime-change operations in Venezuela, Washington is aiming for similar endeavor again, this time in Middle East against Iran. Mass mobilization of US military assets—most notably the deployment of naval armada in the Arabia Sea, the forward deployment of Patriot air-defense system and THAAD missile defense systems, and the sudden evacuation of non-essential personnel from regional military bases, were among advanced preparatory measures by Washington for kinetic action against Iran. Amid heightening tension, few incidents preceded US military actions. Iran seized two foreign oil-tankers allegedly smuggling oil and had attempted to approach US flagged tankers. And a US Navy F-35C shot down a Shahed-139 MALE UAV in the Arabian Sea.

Amid growing tensions, hurried to leave the Persian Gulf. The US Department of Transportation Maritime Administration issued guidelines to US flagged commercial ships to keep distance from Iran’s territorial waters and reject Iranian forces permission to board ship.

It is apparent that Trump Administration does not want a prolonged war, rather a quick precise and decisive operation to facilitate regime change. The US Navy was expected to take the lead using carrier-based airpower and cruise-missile strikes from guided missile destroyers (DDGs) and nuclear guided missile attack submarines (SSGNs), followed by bombardment by US Air Force bombers flying from US mainland or from Diego Garcia.

But unlike the Venezuela operation, which was conducted in American backyard, Washington has limited territorial room available for military action against Tehran given limited territorial support by Gulf nations. Therefore, it is likely kinetic operations will be highly dependent on naval forces.

This makes complete sense. At sea, the US enjoys overwhelming technological superiority. The US Navy has an estimated nine warships in the region. Three Independence class Littoral Combat Ships (LCS) stationed in the Persian Gulf but of limited value as these vessels have little  offensive capability.

The Most prominent formation is the Carrier Battle Group led by the nuclear-powered aircraft carrier USS Abraham Lincoln (CVN-72), with embarked Carrier Air-Wing Nine (CVW-9). CVW-9 boasts F-35C Lightening-II stealth fighters, F/A-18 E/F Super Hornets attack aircraft, E/A-18G “Growler” electronic warfare jets, E-2D “Hawkeye” Airborne Early Warning Aircraft and MH-60R Sea Hawk Anti-Submarine Warfare helicopters. The Lincoln is accompanied by three Aegis-equipped Arleigh Burke class DDGs – each armed with Tomahawk cruise missiles for offensive missions and an arsenal of air-defense missiles for multi-layer defense.

Two additional Arleigh Burke class DDGs are deployed in Strait of Hormuz. Besides surface combatants, an unknown number of Ohio class SSGNs –equipped with a formidable payload of 154 land attack Tomahawk cruise missiles – are also patrolling in the area.

In theory, this naval armada is an instrument of coercion at sea, capable of projecting power against Iran and establishing local sea-control in the Arabian Sea. The employment of force through the maritime domain against various types of targets including: military targets like air-defense systems, nuclear enrichment facilities, and missile sites; high visibility targets like economic infrastructure; and high value targets like Iran’s political leadership itself, complicate Iran’s defensive measures as US Navy can launch from multiple vectors and over vast oceanic distances.

Any Iranian retaliation will mirror this logic. In a low-level response, Tehran has in the past attempted assertive signaling in the maritime domain, i.e., harassing merchant shipping and conducting naval exercises with Russian and Chinese partners.

A mid-level escalation includes counterstrikes on military assets of US and its allies in the Gulf. Facing an existential threat Iran is attempting maritime escalation, such as closing the Strait of Hormuz. Such a move represents a strategic gamble with global consequences and risks overwhelming US retaliation.

Iran, for its part, understands this asymmetry well. Iranian Navy, with obsolete surface and sub-surface fleet, stands no chance against US Navy in a traditional conflict. However, Iran has structured its naval strategy on sea denial rather than sea control. Iranian Revolutionary Guard Corps Navy (IRGC-N) operates hundreds of fast-attack crafts (FACs) equipped with missiles and rockets for saturated strikes against surface vessels. In addition, hundreds of coastal missiles and suicide drones have been dispersed and concealed along the Iranian coast.

Additionally, Iran has commissioned rudimentary specialized vessels, like Shahid Bagheri, Shahid Roudaki and Shahid Mahdavi, which have the capability to launch swarms of drones and containerized missiles at floating targets. Together, these assets manifest Iran’s asymmetrical warfare strategy in the maritime domain through which it seeks to overcome US defenses through overwhelming numbers.

Geography facilitates Iran’s strategy. The Strait of Hormuz remains Tehran’s most potent political leverage. At its narrowest point between the Omani Musandam Peninsula and Iran, merely 33 kms wide with the shipping lane just 3 kms wide in either direction. Iran’s ability to block this channel using coastal missile batteries, FACs, naval mines, midget submarines, and unmanned systems provide its greatest capability to counter any major aggression.

The US understands this very well. Therefore, instead of venturing in close waters, the US Navy is likely to operate mostly outside the Persian Gulf while relying on Over-The-Horizon (OTH) precision strikes using distance as a buffer.

A blockade of Strait of Hormuz, by Iran will have immediate ramifications at the global scale. Oil tankers carry more than 17 million barrels of oil each day through this strait which accounts for approximately 20% of global net oil consumption.  Saudi Arabia and UAE have alterative pipelines operational which can transit about 2.6 million barrels per day. However, compared to the net volume passing through Start of Hormuz, these pipelines can carry 15.29% at maximum capacity and cannot overcome the economic spillover of any disruption at the Strait of Hormuz.

Yet, for Iran this leverage of Strait of Hormuz is fragile and unsustainable in longer run. Israel’s comprehensive air-campaign against Iranian high value assets and subsequent Operations Epic Fury and Midnight Hammer have already exposed major capability voids in Iranian air-defense capability. The Iranian Air Force is obsolete, and its air-defense systems – including domestic as well as Russian and Chinese systems – are mediocre at best.

Against a well-coordinated multi-domain offense, Iran lacks a credible and workable retaliatory option at its disposal. Yes, a large stockpile of short-range ballistic missiles and drones pose a threat, but again, Israel’s precise targeting of Iran’s ballistic missile launchers during Iran-Israel conflict indicates that US can also undertake a similar campaign at a much greater scale employing far more robust options.

But the central question remains: what is Washington’s endgame with Iran? Can limited air strikes realistically cripple the Iranian political regime or permanently degrade its nuclear ambitions, or are they more likely to reinforce the regime’s ideological narrative and deepen Tehran’s perceived necessity for a nuclear deterrent? There are no clear answers.

Mr. Ahmad Ibrahim is research associate at Maritime Centre of Excellence (MCE), Pakistan Navy War College (PNWC), Lahore. His areas of research include Modern Warfare, Military Technology, Conflict Studies, and Nuclear Strategy. Views expressed in this article are the author’s own.

CARRIER, CHOKEPOINT, AND COERCION: THE DYNAMICS OF IRAN-US CONFLICT was originally published on Global Security Review.

The term ‘diplomacy’ originates from the ancient Greek word diplōma, meaning “an object folded in two,” referring to a document granting travel or special privileges to diplomats. Statecraft is defined as the art of governing state affairs, encompassing diplomacy, economic statecraft, military strategy, and intelligence. Economic statecraft is defined as “the use of economic means to pursue foreign policy goals,” including foreign aid, trade, sanctions, tariffs, and investment to achieve foreign policy goals. While diplomacy relies on negotiation and alliances to further foreign policy, economic statecraft, on the other hand, relies on economic power to achieve foreign policy objectives.

In early human history, relations between groups were often conflictual, with armed confrontation serving as the primary means for achieving strategic advantage. Yet, even in antiquity, diplomacy emerged as a vital tool for negotiation and conflict resolution. The rivalry between the United States and China, unlike ancient rivalries, did not evolve solely due to military power; rather, it is a hybrid of trade, investment, alliances, and military strength.

China has rooted its diplomacy in trade and economics, stretching its relationships from Asia to Africa and reviving the old Silk Road that was once a symbol of China’s economic dominance. By using economic diplomacy as its foreign policy tool, China can open new markets and build alliances. Elsewhere in the Western Hemisphere, China is becoming the most important trade partner, with the likes of Argentina, Brazil, and Colombia now shifting towards China despite being traditional allies of the United States.

The United States’ current diplomacy is evolving in the use of economic statecraft as well, through sanctions, tariffs, and foreign investment based on coercion and compliance. If that can be successful in achieving the U.S. foreign policy objective and the interest of the U.S. national security, it is apparent that the strategy is limited, as it does not have global reach. While states may comply with the U.S. policy based on fear of retaliation, success from this method can be limited; as in international relations, states can balance or bandwagon. By analyzing the global politics of small states in the south, the U.S. economic statecraft and boat diplomacy may push them towards balancing towards China.

Robert J. Art and Robert Jervis, in International Politics: Enduring Concepts and Contemporary Issues, argue that “force can be used to take or to bargain. If you can take what you want, you do not need your adversary’s cooperation and do not have to bargain with him. A country may use force to seize disputed territory just as a robber may kill you to get your wallet. Most of the things people and nations want, however, cannot be taken in this way. A nation may want others to stop menacing it; it may even want others to adopt its values. Brute force alone cannot achieve these goals.”

Coercion has been a tool of U.S. economic statecraft in foreign policy for a long time. However, history shows that it has clear limitations, especially in great power rivalry. In the U.S.-Japan rivalry leading to World War II, Japan achieved early military successes, but its overextension and limited industrial base prevented long-term strategic victory. Rather than deterring Japan, U.S. sanctions intensified its aggression, illustrating again that economic pressure can provoke escalation rather than prevent it. Coercive tools such as economic sanctions and tariffs, while a game-changer, cannot alone secure a strategic victory.

For deterrent purposes, economic sanctions historically have not prevented rogue states from changing their behavior. It did not prevent North Korea from developing long-range ballistic missiles, just as it was not successful in changing Iran’s human rights behavior and nuclear ambitions. Rather than punitive deterrence, what ultimately works in Iran is deterrence by denial, as initial punitive measures did not suffice highlighting the limitations of economic statecraft in power competition. Punitive deterrence will not prevent a new power from rising, as described by Alison in Thucydides’ Trap, nor will it prevent weaker states from balancing against strong ones. It did not prevent the rise of China, and it will not prevent the rise of other future powers. What has and will make deterrence effective is the innovation of the U.S. nuclear triad, extended deterrence, and international cooperation through diplomacy.

Contemporary politics reflects the same pattern. Russia’s military power has not secured a decisive victory in Ukraine, and economic sanctions, either targeted or sectoral, have not changed Russia’s posture. As noted by the Council on Foreign Relations, “The United States began its 2022 barrage of sanctions by freezing $5 billion of the Russian central bank’s U.S. assets, an unprecedented move to prevent Moscow from using its foreign reserves to prop up the Russian ruble.” While sanctions in other sectors, such defense and energy, have been seriously targeted, the war is still ongoing. In the same vein, the U.S.–China competition and tariffs imposed on Beijing have failed to change China’s behavior as described by Global Trade Magazine, “China’s annual trade surplus passed $1 trillion, a record high, with a GDP growth remained steady at around 5%.”

It is paramount that the United States develop a hybrid strategy, combining diplomacy and other tools of statecraft to keep its leadership on the global stage, as opposed to relying on power.

While coercion and deterrence are important in great power rivalries, the current global landscape does not favor such a posture. There is a need to consider economic diplomacy as the main tool of U.S. foreign policy and economic statecraft as a second, as a future war will not be determined by military strength but by the mixture of both economic and military might.

Hafiz Ibrahim is a Ph.D. student at Virginia Tech’s School of Public and International Affairs, specializing in political economy, global security, and African-U.S. affairs. His professional experience includes serving as a Defense Trade Analyst government contractor at the U.S. Department of State, as well as working previously at Deloitte Consulting as a Sanctions Analyst. Views expressed in this article are the author’s own. 

Diplomacy in Great Power Competition and the Limits of Economic Statecraft 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.

Based on the latest EAR Report, these are the critical points on global security, upcoming events, and the ongoing discourse on nuclear deterrence, modernization, and geopolitical strategy for 2025.

Quotes of the Week

• Xi Jinping (China): “No one can stop the historical trend” of China’s “reunification” with Taiwan.”
• U.S. Ambassador Philip Goldberg (South Korea): Reaffirmed the U.S.-South Korean alliance amidst geopolitical tensions.
• DPRK Kim Jong Un: Committed to implementing the “toughest” anti-American policy while criticizing the U.S.-South Korea-Japan security partnership.
• Antony Blinken (U.S. Secretary of State): Highlighted Russia’s intentions to share advanced space technology with North Korea.
• NATO Official: Warned of unconventional Russian attacks causing substantial casualties.

Upcoming 2025 Seminar Events

1. January 10, 2025, 10:00 AM: Robert Soofer & Mark Massa on “The Case for Homeland Missile Defense.”
2. January 31, 2025, 10:00 AM: Shoshana Bryen & Ilan Berman on “Middle East Update and the Iranian Nuclear Threat.”
3. February 14, 2025, 10:00 AM: Stephen Blank & Mark Schneider on “Russian Intentions with Its Growing Nuclear Forces.”
4. February 28, 2025, 10:00 AM: Hon. Madelyn Creedon & Hon. Frank Miller on “Assessment and Update of the Posture Commission.”
5. March 14, 2025, 10:00 AM: Gordon Chang & Rick Fisher on “The Chinese Nuclear Threat & Implications for US Security.”

Nuclear Derangement Syndrome

• Criticism of nuclear deterrence is gaining momentum, focusing on framing nuclear weapons as both unnecessary and dangerous.
• The Union of Concerned Scientists highlights essays opposing nuclear modernization, which are countered with arguments emphasizing deterrence as essential for stability.
• The critique overlooks the strategic necessity of nuclear weapons in preventing large-scale conflicts and ensuring global security.

The Biden-Trump Arms Race

• Criticism: The Biden and Trump administrations’ claims of an arms race are exaggerated. They focus on necessary modernization within New START limits.
• Reality: Modernization efforts (Columbia submarines, Sentinel ICBMs, B21 bombers) align with treaty commitments, aiming for readiness by 2042.
• Key Concern: Rising nuclear capabilities of Russia and China surpass New START limits, demanding U.S. responses to maintain strategic balance.
• Counterarguments: Opponents argue modernization fuels an arms race, while proponents emphasize deterrence and technological edge against adversaries.

Download the full report.

ICBM EAR Report Jan, 3 2025 was originally published on Global Security Review.

A driving factor is the rising nuclear threat posed by China, North Korea, and Russia. Such a threat requires effective nuclear deterrence. Another concern is continuing doubts as to whether America’s extended deterrence is reliable in a serious international crisis or a major shooting war.

It is true that when authoritarian states brandish their nuclear arsenals for coercion, repeatedly threatening nuclear attack, any nation would be concerned and look to its guarantor of security for help. Unfortunately, the United States is proving slow to field the kind of arsenal that can not only deter or defeat aggression against itself, but also provide that same capability for almost three dozen allies.

The US is now in a position where it must modernize and expand its own nuclear arsenal and right-size those numbers to sustain dynamic parity with adversaries. Legally and morally, there is indeed an inescapable duty to deter. For Japan and South Korea, that duty will be met by the United States or themselves.

Nuclear participation by America’s allies in Asia would be in direct contravention to US policy, and would violate both the letter and the spirit of the 1970 Non-Proliferation Treaty (NPT), but it would certainly prove understandable. Australia, Japan, and South Korea all signed the treaty, but a voracious and aggressive China and North Korea are proving a real threat to all three states.

Rather than take a position for or against ally nuclear participation, an overview of the main arguments on both sides of the issue are instructive.

Pros

First, recall that Australia, Japan, and South Korea all have a level of experience with the nuclear issue. Japan, of course, faced atomic bombings of Hiroshima and Nagasaki. But, as Japan up-arms to deter China and North Korea, Tokyo might decide to field its own nuclear weapons.

Southern and western Australia were the sites of over a dozen British nuclear weapon tests between 1952 and 1963. This is a fact too few understand.

South Korea had its own nuclear weapon research and development program during the Cold War, which was abandoned because of American pressure. South Korea does rely on nuclear power for its generation of electricity.

Second, note that these American allies do possess civilian nuclear power industries, sophisticated militaries, sizable economies, and advanced science and technology capabilities. All three countries could build nuclear weapons in relatively short order. On the positive side, the fielding of Australian, Japanese, and South Korean nuclear forces would make aggression far more complicated for China and North Korea.

The inclusion of allied nuclear forces would disperse and diversify the collective nuclear deterrent available for employment and increase the number of targets China or North Korea must strike in a conflict. Allied nuclear participation is also an alternative to overseas nuclear basing agreements, like those that existed during the Cold War. Given the lack of available American weapons, such an arrangement could prove very beneficial.

Lastly, nuclear participation would put an end to the endless debate over the credibility of  American extended deterrence. Rather, the focus would turn to integrating nuclear forces in the event of a conflict.

Cons

There are some well-known arguments for continued nuclear nonproliferation. They include the longtime prohibition in US policy and the NPT prohibition against it. There are also pragmatic concerns.

First, if a country were to withdraw from the NPT, although allowed by Article X, it would create significant diplomatic tensions between the US and the country withdrawing from the treaty. American sanctions could significantly harm the economy of Australia, Japan, or South Korea.

Second, any democratic state pursuing nuclear weapons would undermine Western efforts to halt Iran’s nuclear weapons development. Worse, it could open the floodgates of nuclear proliferation among states that are certain to prove less responsible with those weapons.

Third, China might see the pursuit of nuclear weapons by American allies as a sufficient reason to launch a “defensive” nuclear strike. China’s “active defense” strategy clearly supports the use of preventive attacks.

Fourth, the Nuclear Supplier’s Group would end all support to the civilian nuclear programs of Australia, Japan, and/or South Korea. Such a decision would cause great difficulty for power generators.

Conclusion

For Australia, American promises and the continent’s geographic position may prove sufficient to prevent a move to a nuclear weapons program. For Japan and South Korea, the threat is much closer. How these countries evaluate the threat is yet to be determined. They are signaling the United States that they want stronger assurances of American commitment.

Such assurance will prove difficult for the United States for many reasons. Neither China nor North Korea should take for granted that America’s allies will remain under the nuclear umbrella. It is only because of flagrant aggression that South Korea, and most recently, Japan, are even talking about the need for indigenous nuclear forces.

Joe Buff is a Senior Fellow at the National Institute for Deterrence Studies. Views expressed are his own.

The Pros and Cons of Nuclear Participation in the Pacific was originally published on Global Security Review.