Strategic competition in the Indo-Pacific is increasingly taking place in the “gray zone”—the space between routine state competition and open warfare. Rather than relying solely on conventional military confrontation, states are employing hybrid tactics such as economic coercion, cyber operations, disinformation campaigns, and limited military provocations to gradually shift the strategic balance in their favour.

China, North Korea, and Russia are among the most active practitioners of gray zone strategy. Their activities are deliberately calibrated to remain below the threshold that would trigger a large-scale military response, allowing a to challenge the rules-based order while avoiding outright conflict.

For policymakers and military planners, this presents a difficult dilemma. Traditional deterrence models were designed to prevent major wars, not persistent low-level coercion. As gray-zone competition intensifies across the Indo-Pacific, regional states must consider how to deter and respond to these activities without inadvertently escalating the situation.

Understanding the actors involved, and the tactics they employ, is therefore essential. The following sections outline how China, North Korea, and Russia conduct gray zone campaigns across the Indo-Pacific and how these activities collectively challenge regional stability.

China: Gradual Strategic Expansion

China arguably conducts the most sophisticated and comprehensive gray zone campaign in the Indo-Pacific. Beijing’s approach combines military presence, maritime coercion, economic pressure, and legal strategies to expand its influence while avoiding direct confrontation.

In the maritime domain, China frequently uses coast guard vessels and maritime militia to harass foreign ships in disputed waters, particularly in the South China Sea. These forces operate in ways that blur the line between civilian and military activity, allowing Beijing to apply pressure while maintaining plausible deniability.

China also conducts frequent aircraft incursions and large-scale military exercises near Taiwan, while maintaining persistent patrols around the Senkaku Islands. These operations serve multiple purposes: demonstrating military capability, testing regional responses, and normalizing Chinese presence in contested areas. Moreover, Beijing employs cyber espionage, economic coercion, and diplomatic strategies sometimes described as “lawfare,” often passing domestic laws that extend jurisdiction into contested spaces to codify expansive claims, selectively invoking international law, and using legal ambiguity to its advantage. These efforts allow China to reinforce its territorial claims and political narratives while staying below the threshold of open conflict. Over time, such actions gradually reshape the strategic environment in China’s favour.

North Korea: Coercion Through Provocation

North Korea relies heavily on gray zone tactics to pressure its opponents while avoiding the disastrous consequences of full-scale war on the Korean Peninsula.

Cyber operations are one of Pyongyang’s most important tools. Groups such as the Lazarus Group have conducted large-scale hacking campaigns targeting financial institutions, governments, and cryptocurrency exchanges. These cyber activities not only generate revenue for the regime but also demonstrate North Korea’s growing technological capabilities.

In addition to cyber operations, North Korea regularly conducts missile launches, artillery exchanges near disputed maritime boundaries, and military demonstrations aimed at raising tensions in the region. These examples are limited military provocations designed to signal resolve without triggering open conflict.

North Korea also operates extensive sanctions-evasion networks. Through covert maritime trade, smuggling operations, and cyber-enabled financial crime, the regime generates revenue while circumventing international restrictions. These activities allow Pyongyang to sustain its economy and military programs despite heavy sanctions pressure.

Taken together, North Korea’s gray zone strategy enables the regime to coerce its adversaries, generate financial resources, and maintain strategic relevance without crossing the threshold of major war.

Russia: Information Warfare and Strategic Signalling

Although Russia’s primary strategic focus lies in Europe, Moscow also conducts gray zone activities in the Indo-Pacific that challenge regional stability and Western influence.

Cyber operations remain a central element of Russia’s approach. Moscow-linked actors have been associated with intrusions targeting government systems and critical infrastructure in countries such as Japan and Australia. These operations are often accompanied by online disinformation campaigns aimed at undermining public trust and influencing domestic political debates.

Russia also engages in strategic military signalling across the region. Long-range bomber patrols and naval deployments near areas such as the Sea of Japan and the East China Sea demonstrate Russia’s military reach and reinforce its presence in the Indo-Pacific. In some cases, these activities occur alongside Chinese forces, highlighting increasing coordination between Moscow and Beijing. Such cooperation amplifies the strategic message that Russia and China are capable of jointly contesting Western and allied presence in the region.

Russia also maintains sanctions-evasion networks that facilitate illicit maritime trade, including ship-to-ship transfers involving North Korea. These networks allow Moscow to sustain economic ties while bypassing international restrictions.

The Strategic Challenge of Gray Zone Competition

Gray-zone campaigns pose a growing strategic challenge for Indo-Pacific states. Because these activities remain below the threshold of armed conflict, they are difficult to deter using traditional military tools. Yet over time, they can gradually erode regional stability and shift the balance of power. This raises an important question for policymakers: how should states respond to persistent gray zone coercion without escalating into major conflict?

One approach is to use limited, proportionate conventional responses to push back against gray-zone activities. However, such responses must be carefully calibrated to prevent unintended escalation. This is where broader strategic deterrence may play an important role.

A stronger Indo-Pacific security framework—potentially including deeper military integration among regional allies and partners—could provide the stability needed to manage escalation risks. In particular, a future Indo-Pacific nuclear security architecture could serve as a strategic backstop. As much as nuclear deterrence underpins NATO’s conventional defence posture in Europe, a similar framework in the Indo-Pacific could help ensure that responses to gray zone provocations remain limited rather than spiralling into major war.

Preparing for Persistent Competition

Gray zone competition is likely to remain a defining feature of Indo-Pacific security in the coming decades. China, North Korea, and Russia are already using these tactics to challenge the existing strategic order while avoiding direct confrontation.

For regional states, the challenge is not simply responding to individual incidents. It is developing a deterrence framework capable of managing persistent, low-level coercion across multiple domains. Without such a framework, gray zone activities will continue to stress the limits of allied resolve and gradually reshape the strategic landscape. Strengthening regional cooperation, improving resilience against hybrid tactics, and reinforcing strategic deterrence will therefore be essential steps in preserving stability in the Indo-Pacific.

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.

Beyond a Pacific Defense Pact 2: Gray zone campaigns and activities conducted by China, North Korea, and Russia in the Indo-Pacific was originally published on Global Security Review.

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.