The chief of the defence staff, Sir Richard Knighton, will say Russia's war in Ukraine shows that Vladimir Putin's willingness to target his neighbours "threatens the whole of NATO, including the UK".
Footage shows how Boris and Sofia Gurman confronted one of the gunmen as they began their deadly attack on Bondi Beach. Here's what we know about them and the other victims who have been named so far.
In a video, the bystander was seen running up to the attacker from behind and then grabbing the shotgun from him before pointing the weapon back at him.
Fighting has flared up several times this year since a Cambodian soldier was killed in a May skirmish, as decades-old tensions over the border territory persist.
HPS, which is owned by the world's biggest asset manager, is among the parties in discussions with CVC Capital's Global Sports Group about a major debt financing deal, Sky News learns.