The great Indo-Pacific hedge: Why Asia’s allies are arming themselves and each other

Indo-Pacific nations are accelerating defence cooperation, arms partnerships and military modernisation as China’s rapid military rise and doubts over sustained United States attention force regional governments to hedge against a more uncertain security order.

The shift was visible at the Shangri-La Dialogue in Singapore, where defence ministers, military chiefs and intelligence officials discussed China’s expanding military capability, the future of United States regional commitment, and the growing push by Indo-Pacific countries to build direct security ties with one another.

United States Defense Secretary Pete Hegseth urged regional partners to shoulder more of the security burden, while insisting that Washington could manage simultaneous crises and remain engaged in the Indo-Pacific. His remarks came as regional officials continued to assess whether the United States can maintain focus on Asia while also managing conflict in the Middle East and commitments in Europe.

Japan, Australia, the Philippines, Canada and New Zealand are among the countries moving to strengthen defence networks, increase military cooperation and deepen direct capability-building. Japan is emerging as a more active defence partner after changes to arms export rules. The Philippines is expanding security relationships beyond its alliance with the United States. Canada is increasing Indo-Pacific engagement, while New Zealand is reviewing naval options and reinvigorating its role in regional defence arrangements.

The regional response is not a rejection of the United States alliance system. Instead, it reflects a growing recognition that Indo-Pacific countries cannot rely only on Washington’s presence to balance China’s military pressure. Governments are building what officials describe as flexible coalitions, practical military partnerships and more agile forms of capability development.

The pattern marks a major change in Indo-Pacific security. For decades, the United States served as the dominant external security guarantor across the region. That structure still matters, but the region is now moving toward a more networked model in which allies and partners arm themselves, trade defence technology, coordinate exercises and build deterrence with or without direct American leadership in every situation.

Why are Indo-Pacific nations deepening defence ties as China expands military power?

Indo-Pacific nations are deepening defence ties because China’s military expansion is changing the regional balance of power and forcing neighbouring governments to build stronger deterrence. China has expanded naval, air, missile, cyber and coast guard capabilities, while also pressing territorial claims in the South China Sea and increasing military pressure around Taiwan.

The institutional response across the Indo-Pacific is becoming more coordinated. Japan is revising defence export rules. Australia is deepening technology and submarine cooperation. The Philippines is widening security partnerships. Canada and New Zealand are increasing their presence in regional defence discussions. These moves show that countries are no longer treating China’s rise as a distant strategic trend. They are treating it as a practical planning problem.

The broader consequence is that regional defence cooperation is moving beyond traditional bilateral alliances. Countries are building mini-lateral arrangements, joint exercises, maritime surveillance partnerships and arms cooperation mechanisms. This creates a denser security web that can make it harder for any single power to pressure smaller states in isolation.

China’s military rise is therefore producing a counter-effect. The more visible China’s coercive capacity becomes, the more regional governments look for ways to reduce vulnerability. That does not mean every country wants confrontation with Beijing. It means many governments are building options in case diplomacy fails or the United States becomes distracted.

How are doubts about U.S. focus changing the Indo-Pacific security order?

Doubts about United States focus are changing the Indo-Pacific security order by pushing regional governments to prepare for a world in which Washington remains important but not always sufficient. The United States still has unmatched military reach, treaty alliances and forward deployments in Asia, but regional officials are increasingly aware that American attention can be pulled elsewhere.

The Middle East, Europe and domestic politics all compete with Indo-Pacific priorities. United States Defense Secretary Pete Hegseth told the Shangri-La Dialogue that Washington could do two things at one time, a message intended to reassure partners that the Indo-Pacific has not been downgraded.

The fact that such reassurance was needed is itself important. Allies and partners are not abandoning the United States, but they are asking whether American bandwidth can match American rhetoric. A distracted United States does not need to withdraw for regional governments to feel exposed. Even uncertainty can change defence planning.

The broader consequence is strategic hedging. Countries are investing in their own capabilities and in each other, while still preserving close United States ties. This hedging reduces dependence on any single security provider and gives regional governments more resilience if Washington’s focus shifts.

That is why the new Indo-Pacific pattern is not simply alliance management. It is risk management. Governments are preparing for scenarios in which United States support remains strong, scenarios in which it becomes delayed, and scenarios in which regional partners must act first.

Why is Japan becoming a more important defence supplier and security partner?

Japan is becoming a more important defence supplier and security partner because Tokyo has revised long-standing limits on arms exports and is moving toward a more active regional defence role. That is a major shift for a country whose post-World War II security identity was shaped by pacifism, restraint and reliance on the United States alliance.

Japan’s new posture is being shaped by China’s military rise, North Korea’s missile and nuclear programmes, and Russia’s war in Ukraine. Tokyo increasingly views European and Indo-Pacific security as connected, rather than separate theatres. That has pushed Japan to strengthen deterrence, increase defence spending and build closer ties with partners across Asia.

The institutional change around arms exports matters because it allows Japan to support regional partners more directly. Defence cooperation is no longer limited to exercises or diplomacy. It can increasingly involve equipment, technology and industrial collaboration.

The broader consequence is that Japan may become a central node in the Indo-Pacific security network. Countries that once looked mainly to the United States for high-end defence capability may now see Japan as a complementary partner, especially in maritime security, air defence, surveillance, shipbuilding and advanced technology.

This shift will also draw scrutiny from China, which has accused Japan of moving toward militarism. Japan rejects that framing and presents its defence changes as a response to regional threats and a commitment to a free and open international order.

How are the Philippines, Australia, Canada and New Zealand expanding regional defence roles?

The Philippines, Australia, Canada and New Zealand are expanding regional defence roles in different but connected ways. Each country is adjusting to a more contested Indo-Pacific, where China’s maritime activity, Taiwan risk, cyber threats and supply-chain vulnerabilities have made regional cooperation more urgent.

The Philippines is broadening defence relations beyond its alliance with the United States. Manila is working more closely with Japan, Australia, Canada and other partners, especially as confrontations with China continue around the South China Sea. The Philippines sees wider defence ties as a way to strengthen maritime domain awareness and reduce vulnerability to pressure from Beijing.

Australia remains a core United States ally but is also investing in deeper regional defence integration. Canberra’s role includes AUKUS, undersea capability, cyber cooperation, maritime security and closer coordination with Japan and Southeast Asian partners. Australia’s defence policy increasingly treats the Indo-Pacific as a single strategic theatre rather than a set of isolated bilateral relationships.

Canada is increasing its Indo-Pacific security presence after years of being viewed as a peripheral actor in Asian defence. New Zealand is assessing new naval purchases and reinvigorating its role in the Five Power Defence Arrangements, which links the United Kingdom, Australia, New Zealand, Malaysia and Singapore.

The broader consequence is a more distributed security architecture. Smaller and middle powers are no longer waiting for the United States to define every move. They are building habits of cooperation directly with one another.

What does the Shangri-La Dialogue reveal about the region’s defence mood?

The Shangri-La Dialogue revealed a region that is anxious, pragmatic and increasingly focused on capability rather than declarations. Defence leaders in Singapore were not only debating principles. They were discussing burden-sharing, industrial capacity, arms transfers, deterrence and operational cooperation.

United States Defense Secretary Pete Hegseth’s call for regional partners to shoulder more responsibility reflected Washington’s expectation that allies must invest more. That message mirrors United States pressure on Europe, but in Asia it lands differently because many Indo-Pacific countries already feel directly exposed to Chinese military pressure.

Japanese Defence Minister Shinjiro Koizumi said he believed the United States commitment was unwavering, while also acknowledging that some countries may underestimate American resolve. That statement captured the delicate balance facing many allies: reassure the public that the United States remains committed, while quietly preparing for a more uncertain strategic environment.

The broader consequence is that defence diplomacy is becoming more operational. Countries want fewer abstract pledges and more usable capability. They want munitions, submarines, drones, maritime patrol capacity, cyber resilience, air defence and joint training. The mood is less about alliance symbolism and more about practical readiness.

The Shangri-La Dialogue therefore served as a snapshot of a changing region. The United States is still central, but the region is no longer waiting passively for American direction.

Why does this defence shift matter for China and the wider Indo-Pacific balance?

This defence shift matters for China because it complicates Beijing’s ability to deal with regional countries one by one. A more networked Indo-Pacific security order means that pressure on one country can trigger diplomatic, military or logistical responses from several partners.

China’s military strategy benefits when regional states are divided, uncertain or dependent on limited external support. Deeper defence ties among Japan, Australia, the Philippines, Canada, New Zealand and others reduce that advantage by creating more overlapping partnerships.

The broader Indo-Pacific balance is therefore becoming more multipolar within the United States-led system. The United States remains the most powerful actor, but regional allies and partners are becoming more capable and more connected. This could strengthen deterrence by making aggression costlier and response options more flexible.

There are also risks. More weapons, more exercises and more overlapping military partnerships can increase the chance of miscalculation if crisis-management channels are weak. China may view the new network as containment. Regional governments may view it as defensive balancing. Those competing interpretations could intensify mistrust.

The policy challenge is to build deterrence without closing diplomatic space. Indo-Pacific countries are trying to do both: arm themselves more effectively while keeping channels open with Beijing. Whether that balance holds will shape the next phase of regional security.

What does the great Indo-Pacific hedge mean for future defence markets and alliances?

The great Indo-Pacific hedge means defence markets and alliances are likely to become more interconnected, faster-moving and regionally distributed. Countries are not only buying more weapons. They are looking for co-development, joint production, technology transfer, training and interoperable systems.

For defence companies, this shift could create demand in submarines, unmanned systems, missile defence, air defence, surveillance, cyber security, naval platforms, undersea infrastructure and munitions. Governments want systems that can operate with partners, survive contested environments and scale quickly during crises.

For alliances, the shift means the United States will increasingly act as a hub within a wider network rather than the only operational centre. Japan, Australia and other partners may take on more leadership in specific areas. The Philippines and other frontline states may become more integrated into regional planning.

The broader consequence is that Indo-Pacific security is becoming less hierarchical. Instead of a simple United States-led hub-and-spokes model, the region is moving toward a mesh of overlapping arrangements. That mesh may prove more resilient than older alliance structures, but it also requires trust, compatibility and political discipline.

For investors, policymakers and defence planners, the signal is clear. The Indo-Pacific defence buildout is no longer a temporary reaction to one crisis. It is becoming a structural shift in how the region prepares for the next decade of competition.

What are the key takeaways from the Indo-Pacific defence cooperation shift?

• Indo-Pacific nations are deepening defence ties because China’s rapid military expansion has changed the region’s strategic calculations. Governments are increasing military cooperation, expanding exercises and looking for direct partnerships that reduce dependence on any single security provider.
• The Shangri-La Dialogue in Singapore highlighted persistent doubts about whether the United States can maintain full focus on the Indo-Pacific while managing crises in the Middle East and Europe. United States Defense Secretary Pete Hegseth told regional partners that Washington could manage more than one theatre at once.
• Japan is becoming a more active defence partner after revising long-standing arms export limits. Tokyo’s changing role could allow Japan to support regional partners through equipment, technology and industrial cooperation, especially in maritime security and advanced defence systems.
• The Philippines is broadening security ties with Japan, Australia, Canada and other partners as tensions with China continue in the South China Sea. Manila is using wider cooperation to strengthen maritime domain awareness and reduce vulnerability to Chinese pressure.
• Australia, Canada and New Zealand are also expanding their Indo-Pacific defence roles. Australia is deepening regional integration, Canada is increasing security engagement, and New Zealand is reviewing naval options while renewing attention to the Five Power Defence Arrangements.
• The regional shift does not mean Indo-Pacific countries are abandoning the United States alliance system. Instead, countries are hedging by building more independent and partner-based capabilities while still treating the United States as the central external security power.
• The new defence network could complicate China’s ability to pressure countries individually. A more connected Indo-Pacific security architecture may strengthen deterrence, but it may also increase mistrust if Beijing views the partnerships as containment.
• The defence market implications are significant because countries are likely to demand more submarines, drones, air defence systems, cyber tools, maritime surveillance assets and interoperable weapons. The Indo-Pacific buildout is becoming a structural defence industry trend.