Alliances have not been a way we have thought about pursuing our foreign policy interests
Across the Pacific, a quiet but consequential realignment is taking shape. New Zealand's government is weighing membership in a new mutual defence alliance between Australia and Fiji — a step that would mark a departure from Wellington's long-standing preference for broad multilateral arrangements toward something more deliberate and exclusive. Prime Minister Luxon has spoken warmly of the move, though Cabinet approval and a parliamentary treaty process mean the final decision will likely fall to whichever government emerges from this year's election. The backdrop is a Pacific that feels measurably less settled: China's submarine missile tests and unannounced naval exercises have reminded the region that geography alone is no longer a buffer.
- China's test-firing of a nuclear submarine missile into the South Pacific — the second such launch in under two years — has sharpened regional anxiety and given Wellington's defence deliberations a new urgency.
- The Ocean of Peace Alliance, signed by Australia and Fiji in early July, contains binding mutual-defence language: an attack on one is a threat to all, demanding collective action.
- New Zealand's traditional foreign policy instinct — favouring multilateral, inclusive frameworks over named alliances — is being openly questioned by its own ministers and defence analysts.
- PM Luxon's framing of 'getting in early' as a way to shape which Pacific nations eventually join reveals a strategic competition for regional alignment quietly unfolding beneath the diplomatic surface.
- Any formal commitment is months away and will almost certainly be decided by a new government, leaving the country's strategic direction suspended at a moment of rising regional tension.
New Zealand is considering joining the Ocean of Peace Alliance — a mutual defence treaty signed between Australia and Fiji in early July — a move that would represent a meaningful shift in how Wellington has long conducted its foreign policy. Prime Minister Christopher Luxon has described joining as 'logical' given existing relationships with both countries, but Cabinet approval and a formal parliamentary treaty process mean a final decision is months away, almost certainly falling to the government formed after this year's general election.
The alliance carries real weight. Its language commits signatories to consult, cooperate, and act collectively against common threats — treating an armed attack on any member as a danger to all. For New Zealand, this kind of bilateral, exclusive arrangement sits uneasily alongside decades of preference for broad multilateral frameworks. Foreign Affairs Minister Winston Peters framed the shift as a deepening of partnerships already in place; Defence Minister Chris Penk noted it coincides with 75 years of the Australia–New Zealand military relationship.
The timing is pointed. On the same day Australia and Fiji signed their agreement, China launched a strategic missile from a nuclear submarine toward the South Pacific, describing it as routine training. It was the second such test in under two years — the first, in September 2024, sent a dummy warhead to waters just north of Tahiti, landing in a nuclear-free zone. Foreign Affairs Minister Peters called the latest test 'unwelcome and concerning.' Earlier, China's warships had conducted unannounced live-firing exercises in the Tasman Sea, forcing airlines to reroute. The cumulative effect has made the region feel less stable.
International relations scholar David Capie observed that while Luxon had shown genuine enthusiasm, the more telling development was what New Zealand's interest signals about its strategic thinking — a country historically allergic to alliances now seriously entertaining one. Luxon, when pressed on whether joining might antagonise China, was dismissive, framing the alliance as a simple mutual-defence backstop. But his earlier remark — that joining early would give New Zealand a say in which other Pacific nations might eventually be admitted — suggested a more calculated reading of a Pacific whose geopolitical map is quietly being redrawn.
New Zealand is weighing whether to join a defence alliance between Fiji and Australia, a decision that reflects deepening security anxieties in the Pacific and marks a notable shift in how Wellington approaches its regional interests. Prime Minister Christopher Luxon has signalled enthusiasm for the move, telling reporters that joining the Ocean of Peace Alliance—signed between Canberra and Suva in early July—would be "logical" given New Zealand's existing relationships with both countries. But the path forward is neither quick nor certain. Cabinet will need to approve the decision, followed by a formal parliamentary treaty process, a sequence that means any final commitment is months away and unlikely before this year's general election. A new government will almost certainly make the call.
The alliance itself is a mutual defence treaty with teeth. It commits its signatories to "cooperate and consult, and to act to meet common danger." The language is direct: an armed attack on any party within the Pacific would be treated as a threat to all parties' peace and security, triggering a collective response. For New Zealand, joining would represent a departure from decades of foreign policy habit. The country has traditionally favoured multilateral frameworks—broad, inclusive arrangements that spread responsibility and avoid the appearance of taking sides. An alliance, by contrast, is bilateral and exclusive. It names specific partners and draws a line. Foreign Affairs Minister Winston Peters framed the shift carefully, noting that Pacific leaders have long pursued region-led responses to security challenges, and that elevating ties with Australia and Fiji through an alliance would simply deepen partnerships already in place. Defence Minister Chris Penk added that the move would strengthen cooperation as New Zealand and Australia mark 75 years of their own military relationship.
The timing is not accidental. On the same day Fiji and Australia signed their agreement, China conducted a test launch of a strategic missile from a nuclear submarine, sending a dummy warhead toward the South Pacific. Beijing called it routine annual training—the same language used after a similar launch in September 2024. But the optics were unmistakable. Foreign Affairs Minister Peters called the test "unwelcome and concerning" and said it was inconsistent with regional stability. The 2024 launch had already rattled the region; that missile travelled from China to a point just north of Tahiti, a distance roughly equivalent to the span from China to New Zealand. It was the first such test in 44 years, and it landed in waters designated as a nuclear-free zone. When Luxon raised the matter with Chinese President Xi Jinping at an Apec summit in Peru, he framed it as a concern shared across the Pacific. Former Defence Minister Judith Collins had been blunter, saying China "changed the game" with that first launch and describing the test as a "very strong signal."
The missile tests are not China's only military activity in the region. In February 2025, Chinese warships conducted live-firing exercises in the Tasman Sea, forcing airlines to alter flight paths. Luxon acknowledged at the time that the vessels were in international waters and that China had not informed New Zealand of the activity beforehand. The cumulative effect of these moves—the missile launches, the unannounced exercises, the sheer proximity of military capability to New Zealand's doorstep—has created a security environment that feels less stable than it did a year ago.
David Capie, an international relations expert at Victoria University, offered a measured assessment of New Zealand's exploration of the alliance. He noted that Luxon had shown "real enthusiasm" for joining, though it remained too early to predict Cabinet's final decision. What struck Capie as significant was not the alliance itself but what it signals about New Zealand's strategic thinking. "Alliances have not been a way we have thought about pursuing our foreign policy interests," he said. "We've tended to lean towards more multilateral frameworks." Turning to a bilateral alliance represents a genuine shift in approach. Capie also suggested that New Zealand's interest in joining may reflect a desire to keep pace with Australia's growing presence and influence in the Pacific—a practical consideration alongside the security rationale.
When Luxon was asked whether joining the alliance would aggravate China, he downplayed the concern. The arrangement, he said, was simply about Australia and Fiji committing to mutual defence—a backstop in the unlikely event of an attack. But his earlier comments suggested a more strategic calculus. On the day the Fiji-Australia agreement was announced, Luxon told reporters that "New Zealand being in early would be a good thing" because it would give the country a say in determining which other Pacific nations might eventually join. That framing—early involvement as a path to influence—hints at a competition for regional alignment that is quietly reshaping the Pacific's geopolitical map. The decision, when it comes, will say something about which direction New Zealand believes its security lies.
Notable Quotes
Alliances have not been a way we have thought about pursuing our foreign policy interests; we've tended to lean towards more multilateral frameworks. Turning to an alliance as a way to advance our defence interests is a new development.— David Capie, Victoria University international relations expert
New Zealand being in early would be a good thing because you would have an ability to ultimately determine which other countries could join from across the Pacific.— Prime Minister Christopher Luxon
The Hearth Conversation Another angle on the story
Why is New Zealand considering this alliance now, rather than, say, five years ago?
The missile tests changed the calculus. When China fired that first dummy warhead in 2024, it shattered a long period of relative predictability in the Pacific. It wasn't just the test itself—it was the message: China has the capability to project power into waters New Zealand considers its neighbourhood, and it's willing to demonstrate that capability. That shifted how officials think about the region.
But New Zealand has always had security relationships. What makes an alliance different?
An alliance is explicit. It names the threat, names the partners, and commits to a response. New Zealand has preferred to work through broader multilateral forums where you can cooperate without drawing hard lines. An alliance draws a line. It says: these are our partners, and if they're attacked, we respond. That's a different kind of commitment.
Does joining actually change anything on the ground, militarily speaking?
Not immediately. New Zealand and Australia already work closely; the defence relationship is strong. But an alliance formalizes expectations and creates legal obligations. It also signals to China—and to other Pacific nations—where New Zealand stands. That signalling matters in a region where influence is being contested.
Why would Luxon say it won't aggravate China if the whole point is to counter Chinese influence?
He's being diplomatic. Publicly, he frames it as mutual defence between Fiji and Australia. But privately, everyone understands that China's missile tests and military exercises are the backdrop. The alliance is partly about reassurance—showing Pacific nations that Australia and New Zealand will be present and committed to their security.
What happens if Cabinet votes no?
Then New Zealand stays with its traditional approach: working through multilateral channels, avoiding formal alliances, trying to maintain relationships with all major powers. But the security environment would have to shift significantly for that to feel adequate after what's happened in the last year.
Is this the beginning of something larger—a realignment of the Pacific?
Possibly. If New Zealand joins, other Pacific nations will watch closely. Some may follow. Others may resist, worried about antagonizing China. What we're seeing is the Pacific moving from a period of relative strategic ambiguity to one where countries have to choose sides more explicitly. That's the real shift.