Evidence has been uncovered to show a disinformation campaign targeting the Australian media is being operated from inside Russia.
Defence science is proving crucial as smaller powers stand up to China and Russia but can also be used to deter war in an increasingly uncertain future.
The general who oversaw Australia's operations in Afghanistan is under the spotlight after keeping his honours will some officers lost theirs.
Victoria's treasurer has signalled a controversial weapons expo could return to the state despite days of protests some of which which descended into violence.
Up to nine Australian military commanders who held senior roles during the war in Afghanistan will be stripped of their distinguished service medals.
Anti-war activists returned to the streets of Melbourne as political leaders slammed their roles in violent scuffles that broke out with police.
Veterans and their families won't have to wait for a lengthy response following a royal commission, the prime minister has promised.
Defence personnel need greater support to transition from military service to civilian life and access ongoing assistance, a royal commission recommends.
After years of testimony, the chair of the Royal Commission into Defence and Veteran Suicide has shared what he hopes will happen once the final report is out.
Federal departments can't be trusted to solve military suicides alone and the government must intervene to stop the "crisis", Royal Commissioners warn.
The maintenance of a US nuclear-powered submarine in Australia is a step in 'better deterring aggression in the region and upholding rules-based order'.
Russia claims to have repelled a Ukrainian team trying to cross a new part of the border, while Kyiv says it has launched a drone attack on a Russian air base.
Australia is open to bringing close partners and allies to a close-knit security pact as it works with the US and UK to build cutting-edge military tech.
Australia will have to legally protect the US and UK from nuclear risks arising from AUKUS, with both countries able to pull out of it under a new agreement.
HMAS Sydney has successfully fired a missile in a milestone moment for the navy, as the federal government prepares for a "challenging strategic environment".
A probe into an ill-fated MRH-90 Taipan helicopter crash has been told a pilot shared concerns that fatigue and workload would lead to a catastrophic incident.
Australia will accept nuclear technology from the US and UK as part of an updated AUKUS deal, but Anthony Albanese says nuclear waste won't be part of it.
The inquiry into an ill-fated MRH-90 Taipan helicopter crash has been told the night vision helmets had a fault that could cause an incident.
Australia's failure to compensate victims more than a decade after Australian soldiers allegedly killed Afghan civilians, has been criticised by UN experts.
A probe into an ill-fated MRH-90 Taipan helicopter crash has been told night vision helmets the pilots were wearing were known to cause fatigue.
Defence and police are working to recover part of an Italian fighter jet that crashed in a remote part of the Northern Territory during military exercises.
A storm of political drama has engulfed the US and UK, but the acting prime minister is confident this will not hurt Australia's nuclear submarine partnership.
An Italian fighter pilot is recovering in hospital after his warplane "encountered an unknown issue" and crashed during military exercises in remote Australia.
America will continue to be there for its partners even if Donald Trump is re-elected as president in November as expected, the head of the US Navy says.
Australian defence minister Richard Marles has received assurances the new British government is onboard with AUKUS during a visit to the UK.
Taiwan's Defence Ministry says it's monitoring waves of test-firing by China's missile unit in a region more than 1600km from the self-ruled island.
The prime minister has defended the army's recruitment procedures following questions over two Russian Australians being charged with espionage offences.
Anthony Albanese has slapped down Russian accusations Australia was fanning "anti-Russian paranoia" after two people were charged with espionage offences.
Russian officials have accused Australia's national security bosses of fanning "anti-Russian paranoia" after two people were charged with espionage offences.
Russia could be targeting Australia over its support for Ukraine or US secrets, a security expert says after two people were charged with espionage offences.
Australia's intelligence organisations have been backed by the prime minister after an army private and her husband were charged with espionage offences.
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