The president of the USA Joe Biden and the prime ministers of Britain and Australia Rishi Sunak and Anthony Albanese will meet on Monday at Washington for the alliance meeting AUKUSwhere the construction agreement is expected to be presented nuclear powered submarines for the Australian Navy.

A Downing Street spokesman said Sunak would be in the US on Monday “for talks with President Biden and the Prime Minister of Australia”.

Earlier, Albanese told reporters he would meet with Biden “soon,” without specifying an exact date.

After 18 months of consultation, the Australian government is expected to unveil its plan to buy eight nuclear-powered submarines in what Mr Albanese has described as “the biggest leap forward” in the armed forces’ capabilities to the country has ever done.

For a year and a half, deep behind-the-scenes talks have been going on between Canberra, Washington and London over Australia’s acquisition of sensitive nuclear propulsion technologies.

Australia has so far ruled out acquiring nuclear weapons.

It will be the first time US technology related to nuclear submarines has been exported since the 1960s, when the US helped Britain build its own.