Andrew Greene

Growing concern surrounds delays to a Western Australian project to build army water landing craft, amid fears other shipbuilding efforts could also be disrupted.

The prime minister has lashed out at one of the country's leading security think tanks and demanded it "have a look at themselves" after it warned Australia could be left with a "brittle and hollowed defence force" if military funding was not increased.

An online report suggests Indonesia is contemplating buying second-hand fighter aircraft from China and Russia.

The company is competing against a rival bid from Japan that is being heavily backed by Tokyo.

American officials remain privately frustrated over Australia's decision to donate retired Abrams tanks to Ukraine, even as the vehicles finally begin the long sea journey to the battleground.

The drone was demonstrated at HM Naval Base Portsmouth over the weekend in front of the Royal Navy's fleet commander.

Military figures in Ukraine believe a young Australian was killed in the contested Kharkiv region but his remains have not been located.

The ABC has confirmed Nick Parsons died last week while working for a non-government organisation that clears landmines.

A fleet of retired tanks the Albanese government pledged to Ukraine last year remain stuck in Australia, with defence figures in part blaming resistance from the United States for their delayed transfer.

A new fleet of tug boats that the Defence Department ordered for the Royal Australian Navy has been secretly built at a Chinese shipyard under a $28 million contract awarded last year to a Dutch company.