CANBERRA, Australia – The United States and Australia are expanding their engagement with Pacific Island countries as both allies seek to strengthen regional security, infrastructure and economic ties amid China’s growing presence across the Pacific.
The latest efforts include increased cooperation on ports, maritime security, infrastructure and development assistance, reflecting a broader strategy by Washington and Canberra to remain closely engaged with Pacific governments as regional competition intensifies. A U.S.-Australia partnership announced this week includes funding for a major port upgrade in the Cook Islands, while other initiatives are expanding cooperation in infrastructure and security.
The developments highlight how the Pacific has become increasingly important to the strategic calculations of the United States, Australia and China.
Pacific infrastructure becomes a strategic priority
Infrastructure has become one of the most visible areas of competition.
The United States and New Zealand recently agreed to jointly fund an upgrade of the World War II-era port at Omoka on Penrhyn Atoll in the Cook Islands. The United States is contributing $50 million, while New Zealand is providing about NZ$17.5 million.
The project is intended to improve maritime access, safety and economic activity, but it also carries wider strategic significance as Washington and its partners seek to strengthen relationships with Pacific Island governments.
China has also expanded infrastructure and economic engagement across the region, making development projects an increasingly important part of the geopolitical competition.
Australia strengthens its Pacific role
Australia remains one of the Pacific’s largest development and security partners.
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Canberra has expanded bilateral security agreements, economic assistance and climate cooperation with Pacific Island governments.
Australia and Vanuatu, for example, signed the Nakamal Agreement in June covering security cooperation, climate change and economic transformation. The agreement also includes Australian support for skills development and Vanuatu’s digital economy.
Australia has also deepened security relationships with other Pacific states as governments across the region seek assistance with maritime surveillance, disaster response and defense capabilities.
China remains a major regional factor
China’s growing diplomatic and economic presence has changed the strategic environment.
Beijing has expanded relationships with Pacific Island governments through infrastructure financing, trade, diplomatic agreements and development assistance.
The competition does not mean Pacific governments necessarily want to choose between China and Western partners.
Many island nations have sought to maintain relationships with multiple major powers while emphasizing their own priorities, including climate change, development, fisheries, maritime security and economic resilience.
That approach gives Pacific governments greater bargaining power but also places them under increased pressure as strategic competition intensifies.
Security cooperation is expanding
The United States and Australia are also strengthening military and maritime cooperation with regional partners.
Australia is a key U.S. ally in the Indo-Pacific through the ANZUS alliance and AUKUS, while both countries participate in wider regional arrangements including the Quad.
The two countries have increasingly emphasized interoperability, maritime awareness and the ability to respond to natural disasters and security emergencies.
Their cooperation is part of a wider regional network involving Japan, India, New Zealand, France and Pacific Island governments.
Fiji and other island states gain importance
Pacific Island countries are increasingly important to regional security planning because of their geographic position across major maritime routes.
Fiji has emerged as an important partner for regional infrastructure and security cooperation.
The United States, Australia, Japan and India have also discussed infrastructure cooperation through the Quad, including plans involving port development in Fiji.
Such projects combine economic development with broader efforts to improve regional connectivity and resilience.
Climate remains central to Pacific diplomacy
Security competition is only one part of the relationship.
Pacific governments consistently identify climate change, rising sea levels, extreme weather and economic development as core security concerns.
Australia and the United States therefore face pressure to ensure their regional strategies address Pacific priorities rather than focusing exclusively on competition with China.
Infrastructure that improves ports, telecommunications, energy systems and disaster-response capabilities can provide practical benefits while strengthening long-term partnerships.
Pacific nations seek strategic autonomy
Despite growing competition, Pacific Island countries are not simply aligning themselves with Washington, Canberra or Beijing.
Governments in the region have repeatedly sought to preserve diplomatic flexibility.
China’s strategic partnership with the Cook Islands, for example, has existed alongside continuing relationships between the islands, New Zealand, Australia and the United States. New Zealand and the Cook Islands subsequently strengthened their own security arrangements.
That illustrates the broader reality: Pacific governments are increasingly using competition among larger powers to secure investment and assistance while trying to retain control over their own foreign-policy decisions.
A more contested Pacific
The expansion of U.S.-Australian cooperation signals that the Pacific is becoming an increasingly contested strategic environment.
For Washington and Canberra, deeper engagement is intended to strengthen regional resilience and ensure that Pacific governments have alternatives for infrastructure and security partnerships.
For China, expanding economic and diplomatic relationships provide opportunities to increase its influence in a region historically dominated by Australia, New Zealand and the United States.
For Pacific Island governments, the challenge is to convert that competition into tangible economic and security benefits without becoming caught between competing geopolitical blocs.
What Happens Next
The United States and Australia are likely to continue expanding infrastructure, maritime security, development and economic cooperation with Pacific Island countries.
The most important indicators will be new port and infrastructure investments, bilateral security agreements, maritime-security programs and Pacific governments’ decisions about relationships with China and Western partners.
The competition is increasingly being decided not only through military cooperation, but through who can provide reliable infrastructure, financing, climate assistance and long-term economic partnerships.
Key Facts
- Key countries: United States, Australia and Pacific Island nations
- Main strategic issue: Growing competition for Pacific influence
- Major areas: Security, ports, infrastructure, climate and development
- Recent U.S. commitment: $50 million for Cook Islands port infrastructure
- Australia’s role: Major regional security and development partner
- China’s role: Expanding infrastructure, trade and diplomatic engagement
- Regional priority: Maintaining Pacific strategic autonomy
- Status: DEVELOPING — INDO-PACIFIC SECURITY
Reporting Credit: Australian Government — Pacific development, security and regional cooperation; U.S. Government — Pacific infrastructure, security and development initiatives; New Zealand Government — Cook Islands infrastructure and regional cooperation; Pacific Island governments — national priorities, security and development partnerships.
