Aukus: 10 things we need to know about Australia’s nuclear submarine program

From cost to expertise, many questions are yet to be answered amid the fanfare of the plan's announcement

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The Australian prime minister, Anthony Albanese, is preparing to make the most significant announcement since he took office, joining the UK prime minister, Rishi Sunak, and the US president, Joe Biden, to unveil the multi-decade Aukus submarine plan on Tuesday morning AEDT.

For now, many questions remain unanswered. Here are some of the main ones to look out for on Tuesday.

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