The review throws into doubt a strategic partnership that aims to give Australia nuclear-powered submarines and deter Chinese aggression in the Indo-Pacific.

The Pentagon launched a review of a Biden-era pact to develop nuclear-powered submarines with Australia and the UK, as the Trump administration looks to shift the burden to allies and ensure the US’s own supply of warships.

The Pentagon has confirmed a review will be conducted to ensure the program meets the Trump administration's "America First" criteria.