Australia warned that AUKUS and China’s nuclear-capable submarine activities are increasing security risks across the Pacific region.

This escalation follows a Chinese ballistic missile test-fire from a submarine on Monday. The event signals a growing nuclear arms race in the Pacific that could destabilize regional diplomacy and increase the likelihood of military confrontation.

A Philippine spokesperson described the missile test as a "reckless display of military power" that threatens regional stability, said a report from ABC News [3]. The test was intended to signal China's nuclear capabilities to regional rivals.

In response to the shifting security landscape, Australia has signed one mutual defence pact with Fiji [4]. This move aims to strengthen ties with Pacific regional leaders as the continent navigates the competition between the U.S. and China.

Domestic debate continues regarding the AUKUS partnership. Australia plans to acquire three second-hand U.S. Virginia-class submarines [5]. These vessels are Block IV models [6].

Defence Minister Richard Marles said Australia is "very confident" the nuclear-powered submarine deal will go ahead despite recent U.S. concerns [1]. However, some political figures have questioned the strategy. David Shoebridge said, "If we go ahead with the Virginia-class submarines, we could be drawn into a U.S. war with China" [2].

Reports on the future of AUKUS remain contradictory. Some sources indicate the U.S., Britain, and Australia are discussing adding Japan as a new member. Other reports suggest a scaling back of ambitions, noting that Australia will only receive second-hand submarines and focus on unmanned underwater drones [5].

China’s test-fire was a "reckless display of military power" that threatens regional stability.

The intersection of China's nuclear signaling and Australia's pursuit of U.S. submarine technology creates a security dilemma where defensive measures are perceived as offensive provocations. By diversifying its security architecture through a pact with Fiji and the AUKUS deal, Australia is attempting to balance immediate deterrence with long-term regional stability, though this risks deeper entanglement in a potential superpower conflict.