Australia is throwing its support behind the people of Iran as Israel and the United States launch major military attacks against the nation.
Tehran has been pounded by explosions and air strikes, pushing the Middle East into another hugely consequential conflict.
In a statement, the prime minister said Australia stood with the people of Iran in their struggle against oppression.
"For decades, the Iranian regime has been a destabilising force, through its ballistic missile and nuclear programs, support for armed proxies, and brutal acts of violence and intimidation," Anthony Albanese said.
Australia and its international partners called on the Iranian regime to uphold the human rights of its citizens, Mr Albanese said.
"These calls have gone unheeded," he said.
"Instead, the regime has instigated a brutal crackdown on its own people leaving thousands of Iranian civilians dead.
"A regime that relies on the repression and murder of its own people to retain power is without legitimacy."
Mr Albanese also pointed to recent Iranian attacks on Australian soil, including those targeting Jewish communities.
He described Iran's nuclear program as a threat to global peace and security.
"We support the United States acting to prevent Iran from obtaining a nuclear weapon and to prevent Iran continuing to threaten international peace and security," the prime minister said.
Australians are urged not to travel to Iran and anyone there is urged to leave.
"Our ability to provide consular assistance in Iran is extremely limited," Mr Albanese said.
Australia has also upgraded its travel advice for Israel and Lebanon to 'do not travel'. A diplomatic crisis centre has been established.
"Australians should leave now if it is safe to do so," the prime minister said.
