Video has emerged of an Australian man perpetrating the propaganda of ISIS. The fair-skinned, red-haired man called Abu Khaled Australia threatens to put ISIS' flag on Buckingham Palace and the White House.

Is this the new face of ISIS?

A SYDNEY teenager who told his mother he was leaving on a fishing trip in June has turned up in a chilling video for the Islamic State, threatening Tony Abbott and declaring war on the West.

In the video, posted to YouTube last night, 17-year-old Abdullah Elmir from Bankstown is dressed in military gear and holding a rifle surrounded by dozens of other young jihadists.

The red-haired teenager, speaking under the name “Abu Khaled”, addresses the two-minute propaganda video to “the people of America ... the people of Britain ... and especially to the people of Australia”.

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In it, he says ISIS will not stop its depraved crusade until its black flag flies all over the world, including above the White House.

“I say this about your coalition: you threaten us with your countries, bring every nation that you wish to us, bring every nation that you want to come and fight us,” he said in the video.

“Whether it’s 50 nations or 50 thousand nations it means nothing to us.”

The video marks the first time Prime Minister Tony Abbott has been mentioned by name in an ISIS propaganda tape.

A spokesman for the Prime Minister said the video “again highlights the threat posed by ISIL”.

“As the Prime Minister has said on many occasions, ISIL is a threat that reaches out to Australia and our allies and partners.

“That is why Australia has joined the Coalition to disrupt and degrade ISIL in Iraq and is giving our law enforcement and security agencies the powers and resources they need to keep Australia and Australians as safe as possible.”

“Australians should continue to be confident to go about their daily lives as normal.”

In the video, Khaled pledges that ISIS “will not stop fighting”.

“We will not put down our weapons until we reach your lands, until we take the head of every tyrant and until the black flag is flying high in every single land, until we put the black flag on top of Buckingham Palace, until we put the black flag on top of the White House.”

Elmir’s family told Fairfax Media in June that their son had been brainwashed. He ran away from home soon after his 17th birthday

With a 16-year-old friend who has since returned to Sydney, he caught flights from Perth to Turkey via Malaysia and Thailand.

His family only discovered he’d left the country when he texted a friend in Australia and asked the friend to tell his parents he was gone. He later made contact to say he was “crossing the border”, which family members interpreted to mean he was going to join the fighting in Syria or Iraq.

The Elmir family’s lawyer Zali Burrows told AAP the boy’s parents were desperate to get him home with the help of the Australian Government.

“We know they have the intelligence to pinpoint him,” Mr Burrows said.

“The concern is that he’s being used as a tracking device to gather further intelligence, to see where he’s actually going to go.”

The spokesman from the Prime Minister’s office said members of the public should continue to report suspicious activities to the National Security Hotline on 1800 123 400, or directly to local police.