US-Australia Nuclear Submarine Deal: Is Aukus in Trouble? (2026)

A controversial proposal has emerged from a recent US congressional report, suggesting that America may reconsider its promise to sell nuclear submarines to Australia under the Aukus agreement. The report, authored by the US Congressional Research Service, proposes an alternative strategy where the submarines intended for Australia are retained under US command, potentially sparking a heated debate.

The core issue revolves around America's desire to maintain control over these submarines, especially in the context of a potential conflict with China over Taiwan. Australia's stance on this matter has been a point of contention, as the country has not committed to supporting the US in such a scenario. This lack of commitment raises questions about the availability of these submarines in a US-China crisis or conflict.

The report, released on January 26th, highlights statements from Australia's defense minister, Richard Marles, and the chief of navy, indicating that Australia would not make any promises to support the US in a war with China over Taiwan. This stance has led to concerns that selling these submarines to Australia could weaken deterrence and warfighting capabilities in a US-China crisis.

Under the existing Aukus agreement, Australia plans to first acquire three to five Virginia-class nuclear-powered conventionally armed submarines, with the first delivery scheduled for 2032. Subsequently, the first of eight Australian-built Aukus submarines, based on a UK design, is expected to be operational in the early 2040s. However, the congressional report proposes an alternative "military division of labor" where the US retains all Virginia-class submarines and operates them out of Australian bases alongside US and UK attack submarines.

This proposal suggests that Australia could redirect the funds saved from not purchasing these submarines to invest in other defense capabilities, potentially acting as a subordinate force in support of US missions. The report also raises cybersecurity concerns, arguing that sharing nuclear submarine technology could increase the risk of digital and physical entry points for countries like China and Russia to gain access to this sensitive technology.

Furthermore, the debate over selling submarines to Australia is intertwined with ongoing concerns about the low rates of shipbuilding in the US. The country's shipyards are struggling to meet the demand for submarines, not only for the US Navy but also for potential sales to Australia. The US fleet currently has only three-quarters of the submarines it requires, and there are significant concerns about the ability to build enough submarines to meet domestic needs, let alone supply Australia.

Legislation passed by the US Congress prohibits the sale of any submarine to Australia if it is needed for the US fleet. The US commander-in-chief must certify that relinquishing a submarine will not degrade America's undersea capabilities.

The report also addresses the first pillar of the Aukus agreement, which involves Australia gaining the technology to command its own fleet of conventionally armed, nuclear-powered submarines. It outlines the two-stage process and highlights the challenges and costs associated with this endeavor.

The report's author, Ronald O'Rourke, an analyst for Naval Affairs with decades of experience, presents a compelling case for retaining the current Aukus arrangement. He argues that selling Virginia-class submarines to Australia would send a strong signal of collective determination to counter China's military modernization efforts. Additionally, it would accelerate the establishment of an Australian submarine fleet, presenting China with a second allied decision-making center for attack submarine operations in the Indo-Pacific, thus enhancing deterrence.

This proposal has sparked a lively discussion, with previous Congressional Research Service reports also flagging the possibility of no submarines being available for sale to Australia. The implications of this decision are far-reaching and have the potential to impact the strategic balance in the Indo-Pacific region.

What are your thoughts on this controversial proposal? Do you think the US should reconsider its commitment to selling nuclear submarines to Australia under Aukus? Share your opinions in the comments below!

US-Australia Nuclear Submarine Deal: Is Aukus in Trouble? (2026)
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