Australia and Fiji have signed a landmark mutual defence treaty in the Fijian capital Suva, marking a significant step in Australia's effort to consolidate its role as the primary security partner across the South Pacific. Prime Minister Anthony Albanese and his Fijian counterpart Sitiveni Rabuka signed the agreement, formally known as the Ocean of Peace Alliance or Veitacini Treaty, alongside an economic partnership called the Vuvale Union, under which Australia will invest more than one billion Australian dollars (approximately €606 million) in Fiji over a decade. The defence pact is Fiji's first mutual defence treaty and Australia's fourth, following the trilateral ANZUS agreement with the United States and New Zealand signed in 1951, a bilateral treaty with Papua New Guinea concluded last year, and a security agreement with Vanuatu signed just the previous week.

The signing carries particular symbolic weight given that, on the same day, Chinese state media reported that a submarine had test-launched a long-range ballistic missile in the South Pacific — China's first such test in the region in two years. Australian Foreign Minister Penny Wong, who was present in Suva for the signing, said Beijing had informed Canberra of the planned launch in advance, but called it "destabilising to the region" and linked it to what she described as a rapid Chinese military buildup lacking in transparency. She declined to say whether the timing was deliberate. Rabuka, for his part, insisted the new alliance threatened neither Fiji's nor Australia's relationship with China, adding that he did not expect "severe pushback" from Beijing — a reassurance analysts note is itself telling, since it confirms the treaty is widely understood as at least partially directed at Chinese strategic ambitions.

Australia has been systematically building a network of bilateral security treaties with Pacific Island nations since 2022, when China concluded a secretive security agreement with the Solomon Islands that raised fears of a Chinese naval base being established in the region. The Veitacini Treaty is the latest spoke in what Canberra describes as a hub-and-spoke security architecture, following similar agreements with Tuvalu, Nauru, Papua New Guinea, and Vanuatu. Albanese is due to fly to the Solomon Islands on Tuesday to meet new Prime Minister Matthew Wale, who has indicated his government will review the existing security deal with Beijing, and on Wednesday will host the leaders of Papua New Guinea and Tonga in Brisbane.

Analysts caution that the treaty's practical enforceability is limited. Like the ANZUS pact, the mutual defence obligation requires each party to "act to meet the common danger" only "in accordance with its domestic processes" — a significantly weaker formulation than NATO's collective defence clause. Australia itself relies on the United States for its own defence and would face serious constraints in defending Fiji independently. Critics also raise broader questions about whether the proliferation of such treaties risks militarising a region that has long prided itself on a policy of remaining "friends to all and enemies to none," potentially creating a two-tier security order between Pacific nations that have militaries and those that do not. Fiji itself experienced military coups in 1987 and 2006, a reminder that armed forces can be a source of internal instability as much as external security.

The treaty's long-term significance will depend heavily on implementation. Previous Australian security agreements with Pacific nations have proceeded largely out of public view, and questions remain about the costs Fiji will need to bear to meet its alliance obligations, and how governance of the pact will be structured. For now, the Ocean of Peace Alliance sends a clear diplomatic signal — one that the entire region, and Beijing, will be watching closely.