Australia is being urged to take action against Israel after its war in Gaza was branded an act of genocide against Palestinians.

Leaders from 20 major aid agencies have decried an unprecedented humanitarian situation in Gaza, where Israel is throttling aid and supplies as the official death toll tallied by the local health ministry nears 65,000.

A United Nations inquiry has found that statements made by certain Israeli ministers established an intent to commit genocide.

It cited the targeting of civilians, blocking access to food and water and killings in "far larger numbers compared to previous conflicts", after a two-year investigation.

Israel denies it's committing genocide, causing starvation or deliberately targeting civilians.

International law expert Don Rothwell said Austral

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