Prime Minister Anthony Albanese will today announce a new $12 billion investment on a defence hub near Perth to build submarines under the AUKUS agreement.

The funding for the Henderson Defence Precinct, south of the WA capital, is about half the of what the facility will eventually need over the next decade to host and maintain nuclear-powered submarines.

Today's announcement comes ahead of Albanese's trip to the UN General Assembly in New York, and an anticipated potential meeting with US President Donald Trump.

The prime minister is expected use that trip to secure Trump's personal backing of the AUKUS pact, which is being reviewed by the Pentagon.

The defence agreement signed by Australia, the US and Britain was announced in 2021 to contend with growing Chinese military might in t

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