The United States has asked Australia to send a warship to the Red Sea amid ongoing tensions in the Middle East where Israel is waging war on Hamas in the Gaza Strip.

The request came from the US Navy which wants the vessel to join an international task force, following rising attacks on ships by Iran-backed militia trying to disrupt supplies.

Assistant Defence Minister Matt Thistlethwaite said the government was working with the chiefs of the defence force and navy to see whether the ship could be provided.

All decisions will be made in Australia’s interests, he said.

“We’ve certainly had a tradition of being involved in allied operations where we’re upholding international laws and trying to secure peace and stability, particularly related to ongoing commerce,” he said.

Australia has had a presence in the Middle East, including five personnel in the region as part of an allied force aimed at securing shipping lanes, he said.

Treasurer Jim Chalmers said Australia already contributed to maritime security in what was a “dangerous part of the world”.

“When we get these kinds of requests from time to time, the usual practice would be for the defence minister to consider that.”

The Pentagon continued to consult closely with international allies “on implementing a maritime task force”, press secretary Air Force Major General Pat Ryder said.

The Iran-aligned Houthis have waded into the Israel-Hamas conflict, which has spread around the Middle East since October 7, attacking vessels in vital shipping lanes and firing drones and missiles at Israel.

The Houthis have declared all ships heading to Israel will be targeted regardless of their nationality, saying it was a show of support for Palestinians.

They have vowed to continue until Israel stops its offensive on the Gaza Strip.

The opposition would support the government if it agreed to the US request, Liberal senator Jane Hume said.

The confirmation of the US request comes after Australia made a rare break with Washington to vote in favour of an immediate humanitarian ceasefire at the United Nations.

The move has been criticised by Jewish groups in Australia, the Israeli ambassador and the opposition as the resolution didn’t mention Hamas.

The only sustainable ceasefire is one where Hamas – designated a terrorist organisation by Australia – releases all its hostages and lays down its arms, opposition foreign affairs spokesman Simon Birmingham says.

“The UN motion that passed calling for ceasefire without even mentioning Hamas was a woefully inadequate motion,” he told ABC TV.

If Hamas had the chance to regroup it would mean another attack, he said, adding civilians dying was a tragedy of war.

The difference for the vote in support this time, compared to Australia not voting for a similar one previously, was that it mentioned the release of hostages, Mr Thistlethwaite said.

“It’s the fact that human beings are literally starving to death … and children are dying,” he said.

“So we want to see those humanitarian pauses that were in place some weeks ago that allowed for a negotiated release of hostages … and food and water to get in so people don’t die.”

A joint statement signed by the prime ministers of Australia, Canada and New Zealand released before the UN vote unequivocally condemned Hamas, saying a ceasefire couldn’t be one-sided and they needed to lay down arms.

Fighters from Hamas killed 1200 Israelis and took more than 200 hostages in an attack on October 7, according to Tel Aviv.

Since then, more than 18,000 Palestinians have been killed by Israeli forces, according to the Gaza health ministry.

Most of Gaza’s 2.3 million residents have been driven from their homes and face starvation as Israel’s bombing campaign stretches into its third month.

– AAP