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 Kabul, 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.
BBC report that 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).
The first targeted the Abbey Gate – where US and British forces have been processing people entering the airport – and was followed by gunfire.
Minutes later, the second blast occurred at a hotel that is being used by British officials to process Afghans hoping to travel to the UK.
Huge crowds had gathered in the area hoping to be allowed onto an evacuation flight – despite warnings by US and UK officials of a significant risk of suicide attacks by Isis-K, the regional branch of Islamic State.
The jihadist group later said it had carried out Thursday’s bombings.
President Biden said: “We will not forgive. We will not forget. We will hunt you down and make you pay.”
Eleven Marines and a Navy medic were among those killed, said the head of US Central Command, Gen Frank McKenzie. The deaths mark the first US military casualties in Afghanistan since February 2020.
Mr Biden said the troops who had died “were heroes who were on a selfless mission to save the lives of others”.
Gen Frank McKenzie said the threat from Isis-K remained high and US forces were working with Taliban to try to stop further attacks and that the Taliban had already prevented many.BBC