The Asia Pacific’s geopolitical balance is under change. While the U.S. remains the main architect of the plan, it is Australia that is becoming the executor of the strategy in the Oceania region. Through the signing of multiple defense agreements with the small island states, Canberra is transforming itself from a middle power to a regional security player in the South Pacific region.
Australia, being the most trusted ally of the United States and a member of the two most important defense cooperations, i.e., AUKUS and QUAD, makes it suitable to provide security to its neighbors. By signing the bilateral agreements in the defense domain, Australia, particularly, and the United States, generally, want to counter China’s rising military presence in the Pacific region. The defense deals signed with Papua New Guinea, Vanuatu, and Fiji collectively demonstrate that work on a broader security plan is under process. Instead of deploying American military bases directly in these states, Washington is relying on Canberra to expand its security footprint in the South Pacific region.
The recent signing of the Australia-Fiji agreement named “Ocean of Peace Alliance” on July 6, 2026, is the latest in the series. This agreement marks Fiji’s first mutual defense treaty and Australia’s fourth, following treaties with the United States, New Zealand, and Papua New Guinea. Secondly, the announcement of the Pukpuk Treaty entering into force between Australia and Papua New Guinea by PM Anthony Albanese and PM Honourable James Marape MP on July 8, 2026, also showcases a mutual defense commitment. Thirdly, the signing of the Nakamal Agreement between Australia and Vanuatu in June 2026 prevented China from creating military bases in the country.
In addition to this, the new PM of the Solomon Islands, Matthew Wale, has also shown interest in reducing the country’s dependence on China. He stated that the Solomon Islands-China pact, signed in 2022, needs to be revised, which would allow China to deploy its military and police personnel. By signaling on revising the agreement, it clearly demarcates that the Solomon Islands do not want to allow their land to be used for Chinese military bases. This statement proved a silver lining for Australia’s hegemonic designs in the region, as it was fearful that the Solomon Islands would be a foothold for China in the Pacific.
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The momentum and process of acquiring a broader Pacific security strategy are extending, as New Zealand PM Christopher Luxon has also shown interest in joining the recently signed Ocean of Peace Alliance. This also marks Australia’s victory in that these Pacific states are gradually turning away from China and moving towards Western allies. This also shows defense cooperation, military exercises, information sharing, and maritime cooperation. In such a case, when there is an attack on any ally in these domains, then others will come to aid and rescue.
Also, the opening of the US Embassy in the Solomon Islands back in 2023 and the agreement between another QUAD member, i.e., Japan, and the Solomon Islands also strengthen Australia’s position in the Pacific region.
Now, the bigger question here is why this change in geopolitical balance is happening and why the regional players are taking the lead despite having the hegemon, i.e., the United States. Rising interference of China by expanding its naval capabilities has drawn concerns of the states in the Oceania region. The recent firing of a long-range ballistic missile in the South Pacific region on the same day that Australia and Fiji signed the treaty sends a clear message that China will not remain quiet on these expanding relations. Although Chinese state media have stated that this firing was just a mere test using dummy warheads. But the concerns of the government officials of the Pacific countries and their rising apprehensions have clearly shown that concerns for Australia and its allies are increasing against China. This fear has enabled them to move towards a securitization strategy and maximize their security capabilities.
Along with benefits, there are various risks for Australia and partnering nations as well by entering into these defense deals. The original plan of keeping the Indo-Pacific free and open for trade for all is gradually turning into a hub of militarization. Therefore, strategic competition between China and Australia will increase more than ever before, compelling Canberra to engage in more economic and defense treaties in the broader Indo-Pacific region to maintain its central position. Additionally, small island states are also in turmoil as they are caught between China and the Western bloc.
Thus, it is clear that the US is expanding its network in the South Pacific region by making Australia a regional security player. This also sends a signal to China that its growing capabilities and tactics will not go unanswered. Moreover, Pacific Island countries are also diversifying their options by signing defense agreements and are not predominantly relying on China. These agreements also reduce the possibility of Beijing having a military presence in the Oceania region. Therefore, whether Australia’s expanding defense network succeeds or not depends on mutual trust. By not compromising the sovereignty of these states, Canberra can only become the regional security provider on its own terms.
