KABUL: The Taliban's pitch to the Afghan people has always been simple -- life under their hardline rule would finally bring security after decades of war.
Notorious for using suicide bombers during their insurgency, the Taliban are charged with guarding against the same kind of attacks now that they are in power, reports AFP.
"Last night's attacks have shown once again that no one group can claim monopoly over violence in Afghanistan or claim to secure it," said Abdul Basit, a research Fellow at S. Rajaratnam School of International Studies in Singapore.
Taliban spokesman Bilal Karimi told AFP after the attack that IS "will be defeated".
But they side-stepped their own role in freeing some its prisoners.
During the Taliban blitz, which ended with the takeover of Kabul on August 15, a familiar pattern emerged -- when each city fell, the militants would head for the prisons.
With thousands of seasoned Taliban fighters behind bars across Afghanistan, the tactic focused on allowing the group to replenish their depleted ranks.
Hailing from different theological branches of hardline jihahidst thought, the two sides have duked it out in bloody clashes for years in Afghanistan.
The spree of prison breaks increasingly looks to have been a lethal error -- seeding the future battlefield with the Taliban's enemies, while their own forces are stretched thin.
Before the Kabul airport attack, the Taliban were already trying to distance themselves from the prison debacle, piling blame on former president Ashraf Ghani who has fled the country.
"We are cautious and careful because prisoners from Daesh (IS) fled the jail and are hiding now after officials of the Kabul administration abandoned their posts," Taliban spokesman Suhail Shaheen told Pakistani broadcaster Geo News this week.
Shaheen said the Taliban were aware of reports of the imminent threat posed by the group, as a string of Western governments warned IS was aiming to target the airport.
"Our intelligence department and security forces are active in order to avoid such an incident which can cause loss of human lives," Shaheen added.
The Taliban has also pointed the finger at Washington, saying the security in the area of the blasts was controlled by the US.
Their fighters continue to man a network of checkpoints leading to the airport but a loosely secured no man's land separates them from the American troops manning the gates.
With the Americans pulling out in a matter of days, the Taliban will have few excuses moving forward.
During its last rule in the 1990s and in areas controlled by the Taliban over recent years, the hardline Islamist group has been known for handing out swift but heavy-handed justice -- unlike the governments it has ousted.
But the inability to prevent future bombings may erode the little public trust they have secured since capturing the capital.
"Taliban checkpoints that dot around the city failed to catch the perpetrators of the Kabul airport attack," said Nishank Motwani, an Afghan analyst based in Australia.
"But that's based on the assumption the Taliban intended to provide security in the first place to protect lives."
There is no love lost between IS and the Taliban, with the airport attacks laying bare a years-long fight between the rival jihadist outfits.
IS-K has been responsible for some of the deadliest attacks of recent years including a string of gruesome blasts at mosques, schools, rallies and even hospitals.
The Taliban however remained confident of their ability to bring the group to heel, and even after Thursday night's airport carnage, they want to convince Afghans they will be safe under their rule.
"People should stop leaving Afghanistan and going abroad," Taliban spokesman Karimi said.
"They are safe now."