AFP
Kabul - The militant group is highly critical of the 2020 deal between Washington and the Taliban
As desperate Afghans crowd Kabul airport trying to get on evacuation flights to flee the Taliban, officials have warned of another threat: the Daesh group.
President Joe Biden said there is "an acute and growing risk" of an attack at the airport by the group's regional chapter, called Daesh-Khorasan or Daesh-K.
The United States, Britain and Australia have told people to leave the area for safer locations.
When asked directly about the threat, a Taliban spokesman acknowledged a risk of "nuisances" causing trouble in a chaotic situation they blamed entirely on the US-led evacuation.
Who are Daesh-Khorasan?
Months after Daesh declared a caliphate in Iraq and Syria in 2014, breakaway fighters from the Pakistani Taliban joined militants in Afghanistan to form a regional chapter, pledging allegiance to Daesh leader Abu Bakr Al Baghdadi.
The group was formally acknowledged by the central Daesh leadership the next year as it sunk roots in northeastern Afghanistan, particularly Kunar, Nangarhar and Nuristan provinces.
It also managed to set up sleeper cells in other parts of Pakistan and Afghanistan, including Kabul, according to United Nations monitors.
Latest estimates of its strength vary from several thousand active fighters to as low as 500, according to a UN Security Council report released last month.
"Khorasan" is a historical name for the region, taking in parts of what is today Pakistan, Iran, Afghanistan and Central Asia.
What kind of attacks has the group carried out?
Daesh's Afghanistan-Pakistan chapter has been responsible for some of the deadliest attacks of recent years.
It has massacred civilians in both countries.
Last year, it was blamed for an attack that shocked the world — gunmen went on a bloody rampage at a maternity ward in a neighbourhood of Kabul, killing 16 mothers and mothers-to-be.
Beyond bombings and massacres, Daesh-Khorasan has failed to hold any territory in the region, suffering huge losses because of Taliban and US-led military operations.
According to UN and US military assessments, after the phase of heavy defeats, Daesh-Khorasan now operates largely through covert cells based in or near cities to carry out high-profile attacks.
What is Daesh-Khorasan's relationship with the Taliban?
While both groups are hardline militants, there is no love lost between them.
They have differed on the minutiae of religion and strategy.
That tussle has led to bloody fighting between the two, with the Taliban emerging largely victorious after 2019 when Daesh-Khorasan failed to secure territory as its parent group did in the Middle East.
In a sign of the enmity between the two militant groups, Daesh statements have referred to the Taliban as apostates.
How has Daesh reacted to the Taliban victory in Afghanistan?
Not well.
Daesh had been highly critical of the deal last year between Washington and the Taliban that led to the agreement for withdrawing foreign troops, accusing the latter of abandoning their cause.
Following the Taliban's lightning takeover of Afghanistan, a number of militias around the world congratulated them — but not Daesh.
One Daesh commentary published after the fall of Kabul accused the Taliban of betraying their cause with the US withdrawal deal and vowed to continue its fight, according to the SITE Intelligence Group, which monitors militant communications.
What is the threat at Kabul airport?
US officials say Kabul airport, with thousands of US-led foreign troops surrounded by huge crowds of desperate Afghans, is under high threat from Daesh-Khorasan.
The group has claimed responsibility for the deadly bombing attack outside Kabul airport on Thursday, which killed scores of people, including US servicemen
Daesh-K is a "sworn enemy of the Taliban, and they have a history of fighting one another", Biden said Sunday.
"But every day we have troops on the ground, these troops and innocent civilians at the airport face the risk of attack" from Daesh-K, he added.
Some military transport planes taking off from Kabul airport in recent days have been seeing flares launched, which are normally used to attract heat-seeking missiles.