Violence expected as Kabul rescue rolls on

An escalation of violence is expected at Kabul's international airport as Australia continues to rescue hundreds of citizens and visa holders.

Home Affairs Minister Karen Andrews said the situation at the gates of the Hamid Karzai International Airport was "diabolical" and the government was acting as fast as it could to get people out.

It is understood an Afghan security officer and at least seven civilians have died amid the chaos around the airport.

"We know that the situation is deteriorating hour by hour, day by day," the minister told the ABC.

"We know that there are numerous police checkpoints that are controlled by the Taliban along the way to the airport.

"So we are expecting that there will be an escalation in violence, but it is pretty dire circumstances already there at the moment."

Britain plans to use an emergency G7 summit to lobby US President Joe Biden to extend the presence of American troops beyond the August 31 deadline.

Foreign Minister Marise Payne said Australia was part of talks with the US about a potential extension.

"If they are to be extended we are absolutely ready to support a continuing operation at Hamid Karzai International Airport," she told reporters in Canberra.

Another 472 citizens and Afghans with visas were extracted on four Australian flights on Sunday as a dangerous rescue mission continues.

Since August 18 more than 1000 people have been lifted out of Afghanistan as part of Australian efforts to evacuate people from the Taliban-controlled nation.

A second repatriation flight of evacuees arrived in Melbourne from the United Arab Emirates on Monday, taking the total brought to Australia to 271.

Labor's defence spokesman Brendan O'Connor said Scott Morrison ignored multiple warnings time was running out to evacuate people before the US troop withdrawal.

"The prime minister failed to act early enough and has now been forced to admit people will be left behind," he told parliament.

Mr Morrison said the government had acted early to get people out of Afghanistan.

Afghans who guarded Australia's embassy in Kabul have been granted humanitarian visas after earlier being denied a separate entry permit.

They had not been eligible for the locally engaged employee program.

Opposition Leader Anthony Albanese said confusion over security guards, who were told to contact a migration agent on Saturday, was sheer callousness.

"It contrasts starkly with the leadership being exemplified by veterans who served in Afghanistan who have rallied behind their Afghan mates," he told parliament.

Violence expected as Kabul rescue rolls on

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