ScoMo offers Albanese his tips for dealing with Donald Trump

After the US informed Australia of the review overnight, the Coalition seized on the news to suggest the move was influenced by Prime Minister Anthony Albanese's refusal to comply with US President Donald Trump's request to commit to higher defence spending.

"This government has sent mixed messages to our allies and now we're seeing the consequences," Opposition Defence spokesperson Angus Taylor said.

But Mr Morrison, who signed Australia up to the AUKUS security pact in 2021, said it was "important to keep this in perspective and not to over-interpret" the review, which was initiated by the US Department of Defense and not the White House.

"Like with any arrangement ... you've got to keep making the case," he told Sky.

"The first time round, it took us over a year - and that was predominantly during the first Trump administration - to convince pretty much the same people who will be involved in this review about the technical and policy and strategic merits of this."

Former US ambassador Joe Hockey, who has been described as "Australia's Trump-whisperer", expressed a similar view.

"I don't think we should be overly worried, but we should be involved in contributing to that review," Mr Hockey told Sky.

"I know Donald Trump supports AUKUS, and there's no doubt about Congress and the Senate. I was there just a few weeks ago, met with a number of key senators, Democrats and Republicans, including Senator [Roger] Wicker, and they're emphatically supporting AUKUS. But you have to pay your way, and Australia is paying its way."

Deputy Prime Minister and Defence Minister Richard Marles played down the significance of the review, saying it was only natural for the US to review the deal and arguing this was no different to Australia's Defence Strategic Review.

Asked if he could guarantee Australia would get submarines out of the AUKUS deal, he told ABC radio: "The agreement is for the submarines to come in the early 2030s and that is what we are all working to and I'm very confident that that is what is going to happen."

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When asked what Mr Albanese should say to Mr Trump at a possible face-to-face meeting on the sidelines of the G7 Leaders' Summit in Canada next week, Mr Morrison said Australia needed to be "very clear about our commitments on continuing to increase our capabilities".

"The other thing about AUKUS is it's not a lowest common denominator partnership," he said. "It's a highest common denominator partnership. It requires big investments. "

Mr Morrison signed Australia up to the three-nation AUKUS security alliance between Australia, the UK and the US in 2021 after controversially tearing up a previous $90 billion deal to buy diesel-powered submarines from France.

The alliance was formed to counter China's strategic moves in the Pacific arena and was underpinned by an agreement between the US and the UK to provide Australia with access to nuclear-powered submarine technology, to eventually replace its aging Collins-class boats.

Australia is contracted to buy three off-the-shelf nuclear submarines from the US, costing about $US4 billion each, before making eight of its own - with the total cost expected to hit $368 billion. The first submarine is not expected to join the Australian fleet for years.

The deal includes a clause that enables the US to withhold ready-made nuclear submarines from Australia if it does not have enough for the US Navy's use - and American shipyards are not on track to meet domestic targets.

Mr Albanese has refused to commit to a specific target for Defence spending after the US administration has called for Australia to increase it to about 3.5 per cent.

He told the National Press Club on Wednesday that "Australia should decide what we spend on Australia's defence", saying "we will always provide for capability that's needed".

Mr Morrison agreed with the Opposition that "we need to get to" putting 3 per cent of GDP into the Defence budget.

"I don't make that as a partisan comment. I just think it's absolutely necessary, and there's no shortage of areas where that can be filled," Mr Morrison said.

He said the Pentagon was "very focused on the US submarine production rate", amid reports that US shipyards were not manufacturing nuclear submarines quickly enough to meet the US Navy's own needs.

"Every time I go to the US, there's very strong support [for AUKUS]," Mr Morrison said.

"There's very strong congressional support as well ... AUKUS has been making very good progress there."

Mr Morrison said the AUKUS security pact was "the strongest one and the most important one we've struck in 70 years - and it's the one that I've noticed that the Chinese in particular, have really reacted to ... So that tells you something, I think, about its strategic merit."

Former Liberal prime minister Malcolm Turnbull has joined the Greens in calling on the Australian government to conduct its own review of the AUKUS deal.

"The UK is conducting a review of AUKUS. The US [Department of Defense] is conducting a review of AUKUS," he posted on X/Twitter.

"But Australia, which has the most at stake, has no review. Our parliament to date has been the least curious and least informed. Time to wake up?"

Mr Turnbull is a longtime critic of Mr Morrison's handling of AUKUS and has previously argued the government needs a backup plan in case the deal falls over.

Mr Taylor rejected the call for a review, telling reporters in Canberra on Thursday: "I'm not into bureaucratic processes. I'm into outcomes, and I want to see the outcome."

- with Eleanor Campbell