Civilians in the blockaded Gaza Strip will receive an extra $15 million in humanitarian aid from the Australian government.

Prime Minister Anthony Albanese made the announcement at a joint press conference with US President Joe Biden.

The two world leaders reaffirmed their support for a two-state solution to the 75-year-long dispute over Israel and Palestine and a “path toward peace”.

“We grieve for the loss of every innocent life, whether that be Israeli or Palestinian,” Mr Albanese told White House reporters overnight.

However, neither of them have called for a ceasefire and instead continue to advocate for Israel’s “right to defend itself”.

President Biden, a long-time Zionist, said there was “no going back to the status quo” and said leaders needed to begin considering what would happen next.

“I’ve spoken to leaders throughout the region … about the need to work toward a greater integration for Israel while insisting that the aspirations of the Palestinian people will be part of that future as well,” he told reporters.

The $15 million commitment adds to $10 million Australia has already committed to emergency water and medical services to the Palestinian territory.

“In times of crisis, respect for international humanitarian law is paramount – it is a recognition of our common humanity,” Mr Albanese said.

But a law firm representing Palestinian Australians is threatening the federal government with legal action for positions taken over Israel and Palestine.

BG Legal Consultants solicitor Moustafa Kheir penned a letter to Mr Albanese, suggesting Israel has committed war crimes in its offensive on Gaza in response to the Hamas attacks.

Mr Kheir’s letter accuses government members of “aiding, abetting and otherwise assisting” Israel’s alleged crimes, and says they could be criminally responsible for the crime of genocide themselves for supporting Israel.

“We write to put you on notice that your government appears to have contravened domestic and international law and to request specific action by you and your government to avoid prosecution for these contraventions,” the letter reads.

Mr Kheir says Australia might be complicit in genocide for “covering up” Israel’s alleged genocide and public declarations to do so, and by previously selling weapons to the country.

He also suggests letting dual Australian-Israeli nationals to travel overseas to participate in the conflict may amount to a breach of law.

“The Australian government should be aware that international criminal tribunals have previously examined the responsibility of those who have substantially contributed to a crime by providing encouragement and moral support to the perpetrators,” the letter reads.

“(Australian comments) plainly amount to the Australian government providing encouragement and moral support to Israel.”

The solicitor is demanding Australia echoes the UN secretary general’s call for an immediate ceasefire, and says the prime minister must immediately condemn Israel’s actions and encourage ministers to rescind their support.

On Wednesday, Israel’s ambassador to Australia Amir Maimon said he was engaged in discussions with Australian officials to ensure safe passage out of Gaza for foreign nationals.

Almost 80 Australians remained trapped there on Wednesday, although Foreign Minister Penny Wong says another eight have been removed from the West Bank.

“As part of our international obligation, we allow the passage of humanitarian assistance,” Mr Maimon told the Press Club.