Former prime minister Malcolm Turnbull says Australia faces a “very real risk” of receiving no submarines under the AUKUS partnership, warning that such an outcome would amount to a major failure of defence planning. He is set to give evidence to an inquiry into AUKUS.

Turnbull’s central point is that if Australia does not ultimately have submarines, it would be “the most serious failure of Australian defence planning in modern history.” The reports describe his testimony as a caution about delivery and capability timelines associated with the program rather than a direct dispute over the policy’s strategic intent.

Across the outlets, the coverage is consistent about what Turnbull intends to tell the inquiry and the quoted assessment of the consequences if submarines are not delivered. None of the sources cited here add differing claims about his broader argument, but they frame the message with similar emphasis on the seriousness of the potential shortfall.