President Joe Biden says the US airlift from Kabul will continue despite a jihadist attack that killed over 90 people including 13 US service members.
"We must complete this mission and we will," he said. He also vowed to hunt down the perpetrators.
More than 100,000 people have been evacuated from Afghanistan, which fell to the Taliban on 15 August.
But many more Afghans have been rushing to the airport ahead of the 31 August deadline for US forces to leave.
Mr Biden vowed to complete the mission, adding "we will not be deterred by terrorists".
Thursday's attacks happened at about 18:00 local time (13:30 GMT).
But the attack is likely to significantly complicate the evacuation effort ahead of the 31 August deadline.
There are currently 5,800 US troops on the ground at Kabul airport with a further 1,000 UK troops also there.
To date, 104,000 civilians have been transferred from Afghanistan, including 66,000 from the US and 37,000 from allies and partners.
About 5,000 people are waiting at the airport and many more are still trying to get through the perimeter checkpoints.
A number of countries, including Canada, Belgium, the Netherlands and Denmark had already stopped their operations.
Turkey has announced that its troops, who had been providing security at the airport for six years, were withdrawing.
UK Prime Minister Boris Johnson - who chaired a crisis meeting with senior officials on Thursday - said UK evacuation flights would continue.
(Source: BBC news website, headline composed by Newsroom, photo from Google search)
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