Ambassador John Bolton tells 7NEWS Donald Trump re-election could mean AUKUS subs plan torn up [Video]

Australia’s plans to acquire a fleet of nuclear-powered submarines would be torn-up if Donald Trump is re-elected next week, according to a former top Republican party security advisor.

The AUKUS defence pact would be one of the first US alliances to undergo a major review under an incoming Trump administration – with the official warning Australia not to take the agreement “for granted”.

“I think it could be in jeopardy,” former US ambassador to the United Nations, John Bolton told 7NEWS.

“All Trump looks at is the balance sheet, and if he sees more US expenditure than those of other parties to the agreement, then I think there will be trouble.”

The defence bill that passed on Capitol Hill late last year requires the president of the day to give the final tick of approval before any US submarines are delivered to Australia.