World leaders condemned the bomb blasts on Thursday which tore through crowds of people at Kabul airport.
At least 69 were killed, several others wounded in the two blasts outside Kabul airport. 12 US soldiers were among the victims.
US President Joe Biden pledged to retaliate against the attack and confirmed ISKP carried out the suicide bombings.
“We will hunt you down and make you pay. I will defend our interests in our people with every measure at my command,” he said.
“To those who carried out this attack, as well as anyone who wishes America harm, know this: We will not forgive; we will not forget.”
He called the slain American soldiers “heroes to safe the lives of others”.
“Our hearts ache … for all those Afghan families who lost loved ones, including small children, or who have been wounded in this vicious attack,” Biden said.
For his part, NATO Secretary-General Jens Stoltenberg also expressed anger and sorrow.
“I strongly condemn the horrific terrorist attack outside Kabul airport. My thoughts are with all those affected and their loved ones,” he said on Twitter.
“Our priority remains to evacuate as many people to safety as quickly as possible,” added Stoltenberg.
In addition, the UK’s defence ministry said on Twitter there were no reports of British military or government casualties from the blasts.
Prime Minister Boris Johnson called an emergency meeting on Friday and said British evacuation efforts would continue despite the “barbaric” attacks.
“Clearly what this attack shows is the importance of continuing that work in as fast and as efficient a manner as possible in the hours that remain to us,” Johnson said.
Furthermore, Turkey’s foreign ministry deplored “this heinous attack in the strongest terms, offer our condolences to the relatives of those who lost their lives and wish a speedy recovery to the wounded”.
In a statement, Qatar’s foreign ministry also strongly condemned the attacks and conveyed condolences to the relatives of those who lost their lives. He also wished a speedy recovery to the injured.