The United States and Israel were hoping for regime change in Iran when they attacked the country, but a fresh leadership development shows that's far from happening.

The son of Ayatollah Ali Khamenei, Mojtaba has been named as Iran's new supreme leader and the decision locks hardliners firmly in control.

Ali Khamenei was killed in Israeli and US strikes that kicked off the war.

The appointment by Iran's top clerics comes after Israel threatened to kill any chosen successor and Donald Trump said any new leader would not last long without US approval.

Meanwhile farmers say the war in the Middle East has left Australia vulnerable to shortages of fuel and fertiliser.

There are concerns about fuel security as the war in the Middle East disrupts global supply.

The government says Australia has sufficient fuel reserves and the consumer watchdog's monitoring retailers to prevent price gouging.

Three more remote communities in the Northern Territory have been evacuated due to the ongoing flood crisis.

Weather forecasters are warning a monsoonal trough could bring more rain to areas that are already saturated.

A large scale emergency response was triggered over the weekend in the regional hub of Katherine after its worst flooding in almost three decades. 

Iran's state media is reporting the country's Assembly ‌of Experts has ‌named Mojtaba ⁠Khamenei ‌to replace ‌his father, Ayatollah Ali Khamenei, ‌as ⁠the ‌country's new ‌supreme ‌leader.

It comes after a warning from US president Donald Trump, if his administration doesn't approve, the new leader won't last long.

Iran's been saying it'll target the Ayatollah's successor after US and Israeli strikes killed the supreme leader.

Meanwhile the Coalition says it'll likely support the Australian Government if it considers providing military assistance to Middle Eastern nations.

The government says it's considering a request from Gulf states who are being hit by Iranian strikes.

But Foreign Minister Penny Wong insists Australia will not engage in offensive action against Iran.

The government's also urging family members and dependants of Australian officials posted to the United Arab Emirates to leave as the country continues to be targeted by strikes.

Katherine residents are facing a lengthy clean-up after the worst flooding in the Northern Territory hub in almost three decades.

Separately in Queensland there are flood watches in place for much of the state.

The south east could expect falls of up to 150 millimetres today.

Residents in Sapphire in Queensland's central highlands are being told to move to higher ground, as authorities warn  floodwaters are posing an immediate threat.

Ted O'Connor with the top stories

The Australian Government's urging family members of officials posted in the United Arab Emirates to leave as the conflict in the Middle East continues.

The latest advice from the federal government comes as the UAE continues to be targeted by strikes.

The government's also considering a request from Gulf states to provide military assistance.

The government's not saying what that entails, other than it would be to protect those nations from Iranian drone and missile strikes.

The Coalition's signalled such a move could have bipartisan support while the Greens are against any prospect of what they're calling 'mission creep'.

More broadly, a seventh US soldier has died in the war.

While US President Donald Trump's warning that Iran's next supreme leader won't last long without his approval, as Tehran prepares to reveal the successor to Ayatollah Ali Khamenei.

There are calls for Iran's women's soccer team to be granted asylum after they wrapped up their Asian Cup campaign last night in Australia.

Amnesty International says there's no way the team can go back to Iran, especially given they face punishment for not singing the national anthem after one of their matches.

But if they decide to stay their families and loved ones in Iran could face retribution, putting the players in an impossible situation.

For more news at any time you can follow the ABC Top Stories podcast.

Communities in the NT that have been hit by flooding over the weekend are bracing for more rain, in particular the large service and tourist town of Katherine.

That community is dealing with the worst flooding in three decades.

The township is isolated and surrounding places have been evacuated.

Meanwhile heavy rain's also forecast in south east Queensland and people are being warned about potential flooding.

Iran's close to naming a supreme leader which looks likely to be the assassinated Ayatollah's son, but US President Donald Trump's warning whoever it is won't last long if his administration doesn't approve.

In other developments in the conflict, Lebanon says over half a million people have been displaced in a week of fighting between Israel and the Iranian aligned militant group Hezbollah.

While Israeli attacks on Iranian oil facilities have blackened the skies of Tehran and prompted warnings for residents to wear masks and stay indoors.

India's celebrating winning the men's T20 World Cup on home soil and it's a record third time the side has claimed the trophy.

India made five for 255 off its 20 overs.

Its bowlers were all over New Zeland who were all out for 159 in 19 overs.

Jasprit Bumrah took four for 15.

The Northern Territory town of Katherine's been hit with its worst flood in almost three decades and people in the Top End are bracing for more rain today.

The town's largely isolated and water inundated parts of its centre and suburbs.

Authorities are trying to assess the damage and they're also worried about crocodiles in the floodwaters.

A member of the clerical body that's choosing Iran's next supreme leader says it's reached a consensus on who should succeed the assassinated Ayatollah Ali Khamenei.

Reports coming out of Iran strongly indicate the late supreme leader's son will be picked.

But US President Donald Trump's been insisting his administration should have a say in who the next leader is, warning they won't last long if he doesn't approve.  

Meanwhile residents in the Iranian capital Tehran are confronting a new peril in addition to the bombardment by the US and Israel.

Authorities are warning residents about acid rain after Israeli strikes on Iranian oil facilities, and people are being urged to stay indoors and wear masks.

The federal Greens have accused Labor of "mission creep", as the government considers a request for military assistance from the Persian Gulf states.

The Albanese Government's emphasised Australia will not engage in offensive action against Iran.

Three people have been charged with murder and the armed robbery of a man being described as a 'quite hero' after an alleged attack at a railway station in Melbourne's outer north.

Aidan Becker, who was 22, was killed after he stepped in to help a 14-year-old boy who was allegedly being robbed and assaulted by a group of males.

Mr Becker's being mourned by his colleagues and former football teammates, who describe him as a "special young man".

India has won men's cricket's T20 World Cup for a record third time with a 96-run victory over New Zealand.

New Zealand struggled in the chase and were all out for 159 in 19 overs, with Jasprit Bumrah taking 4 for 15 on home soil.

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