Former prime minister Paul Keating has taken aim at Australia's AUKUS nuclear-powered submarine deal with the United States and the United Kingdom, calling it the "worst international decision" by a Labor government since conscription in World War I. 

The former Labor leader also offered a scathing assessment of the government's most senior politicians, including Prime Minister Anthony Albanese, Defence Minister Richard Marles, and Foreign Affairs Minister Penny Wong, dubbing Mr Marles and Senator Wong "seriously unwise ministers".

"This week, Anthony Albanese screwed into place the last shackle in the long chain the United States has laid out to contain China," Mr Keating said in a written statement issued before he addressed the National Press Club on Wednesday.

"No mealy-mouthed talk of 'stabilisation' in our China relationship or resort to softer or polite language will disguise from the Chinese the extent and intent of our commitment to United States's strategic hegemony in East Asia with all its deadly portents.

"History will be the judge of this project in the end. But I want my name clearly recorded among those who say it is a mistake. Who believes that, despite its enormous cost, it does not offer a solution to the challenge of great power competition in the region or to the security of the Australian people and its continent."

Mr Keating has been critical of the AUKUS defence pact since it was first struck between the three nations 18 months ago.

Mr Albanese met with US President Joe Biden and UK Prime Minister Rishi Sunak in California earlier this week, where they finalised a deal for Australia to buy and build nuclear-powered submarines, costing up to $368 billion over three decades.

Australia will eventually build British-designed nuclear-powered submarines with American combat systems.

Before that happens, Australia will buy at least three US nuclear-powered submarines early next decade — boats that might be second-hand and need US Congressional approval. 

The Coalition has endorsed the deal.

"For $360 billion, we're going to get eight submarines. It must be the worst deal in all history," Mr Keating said.

The nuclear-powered submarines will replace Australia's ageing diesel-powered Collins Class submarines, which Mr Keating took credit at the National Press Club for acquiring with then-Labor defence minister Kim Beazley. 

Mr Beazley, in an interview with the ABC's Afternoon Briefing, said he disagreed with Mr Keating's assessment that the AUKUS deal was the worst international decision by a Labor government since World War I.

"I don't agree with that — no. And I think it's a good decision that's been arrived at with detailed consideration," he said.

"I actually think we need these submarines. It's a question of their speed and the areas that they have to cover."

Australian, American and British officials have cited the growth of China's military as a key reason for Australia needing nuclear-powered submarines.

Mr Keating dismissed China's growing military as posing a threat to Australia.

"Let me say this: China has not threatened us," he said.

Mr Keating, who said he spoke for both Labor politicians and grassroots members who felt they could not speak out, said nothing short of a Chinese naval fleet heading for Australia should be considered a threat. 

Opposition Leader Peter Dutton described Mr Keating's comments as "unhinged".

Speaking to the ABC's 7.30 program, Mr Marles refused to criticise Mr Keating for his opinions but insisted the government was acting in Australia's best interest.

"Whatever Paul Keating says about myself, the Foreign Minister, the Prime Minister – you won't hear a bad word from us about him," Mr Marles said.

"The Hawke-Keating government was the great peacetime reformist, long-term government in our history. It's a government that finished in 1996, and our responsibility is to be governing the country in the national interest in 2023."

Mr Marles also defended Senator Wong against Mr Keating's assessment of her time as foreign minister, arguing she has done a "great deal" to repair international relations in the Pacific region.

"Penny Wong has done more in respect of putting an emphasis on our relations with the Pacific than any foreign minister, within a year – she really is one of the greatest foreign ministers we've had," Mr Marles said.

He also praised Mr Albanese for his presence on the international stage.

"He's actually the person who stabilised our relations with China, but he understands the importance of getting the hard power equation right — that's what we're doing here."