The conflict with Iran has surged beyond the Persian Gulf into a high-stakes international crisis, marked by the sinking of an Iranian frigate near Sri Lanka and the Australian Defence Force's sudden deployment of heavy transport aircraft.
In the most dramatic escalation since hostilities began six days ago, a US submarine torpedoed the IRIS Dena in the Indian Ocean, leaving 87 sailors dead and dozens missing.
NATO air defences in Turkey intercepted a ballistic missile, threatening to trigger collective defence pacts across Europe.
With thousands of citizens stranded by the widening chaos, the Australian Government has dispatched a C-17A Globemaster and a KC-30A tanker to the region for emergency evacuations.
While Canberra prefers a return to commercial aviation, the scale of the "repatriation challenge" has necessitated military contingency planning.
The move comes as Tehran issues chilling threats to strike Israel’s Dimona nuclear reactor and global embassies in retaliation for the targeted assassinations of senior leadership, including the late Ayatollah Ali Khamenei.
On the ground, the prospect of a multi-front land war looms; Kurdish militias are reportedly preparing to cross the border into western Iran to challenge the embattled regime.