What Happened to Abbey Gate (Kabul Airport Attack)?
The Abbey Gate attack was a suicide bombing on August 26, 2021, at Hamid Karzai International Airport in Kabul, Afghanistan, during the chaotic U.S. withdrawal, killing 13 U.S. service members and approximately 170 Afghan civilians. ISIS-K claimed responsibility, and as of August 2026, investigations are ongoing, with one accomplice convicted and a special review panel uncovering previously hidden classified documents related to the incident.
Quick Answer
The Abbey Gate attack refers to the suicide bombing on August 26, 2021, at Kabul's Hamid Karzai International Airport during the U.S. withdrawal from Afghanistan. The attack, claimed by ISIS-K, resulted in the deaths of 13 U.S. service members and around 170 Afghan civilians. As of August 26, 2026, an ISIS-K accomplice, Mohammad Sharifullah, has been convicted for his role, and a U.S. Department of War special review panel announced the discovery of previously undisclosed classified documents related to the attack, fueling ongoing calls for accountability and transparency.
📊Key Facts
📅Complete Timeline13 events
U.S. Forces Withdraw from Bagram Airfield
President Biden orders the withdrawal of American forces from Bagram Airfield without notifying Afghan National Defense and Security Forces, leading to the Taliban seizing the base and freeing thousands of prisoners, including future Abbey Gate bomber Abdul Rahman al-Logari.
Abbey Gate Suicide Bombing
An ISIS-K suicide bomber detonates an explosive device at Abbey Gate of Hamid Karzai International Airport during the evacuation, killing 13 U.S. service members and approximately 170 Afghan civilians.
U.S. Launches Retaliatory Drone Strike
The U.S. conducts an unmanned airstrike in Nangarhar Province, targeting three suspected ISIS-K members in response to the Abbey Gate attack.
Second U.S. Drone Strike Kills Civilians
A second U.S. drone strike in Kabul, intended for ISIS-K members, mistakenly kills ten Afghan civilians, including seven children.
Taliban Kills Primary Plotter of Attack
The Taliban reportedly kills the senior Islamic State group leader believed to be the primary plotter behind the Abbey Gate bombing.
USCENTCOM Orders Supplemental Review
U.S. Central Command orders a multi-month supplemental review of the original Abbey Gate investigation.
Congressional Gold Medal Awarded to Victims
The 13 American service members killed in the Abbey Gate attack are posthumously presented the Congressional Gold Medal.
USCENTCOM Supplemental Review Findings Released
The USCENTCOM supplemental review concludes that the original investigation's findings were accurate and the attack could not have been prevented at the tactical level.
Mohammad Sharifullah Apprehended and Extradited
Mohammad Sharifullah, an ISIS-K accomplice involved in the attack, is apprehended in Pakistan and transferred to the United States.
Fourth Anniversary and Special Review Panel Established
On the fourth anniversary, the Department of Defense honors the fallen, and Secretary of War Pete Hegseth establishes a special review panel to investigate the withdrawal and the Abbey Gate bombing, led by Sean Parnell.
Mohammad Sharifullah's Trial Begins
The federal trial of Mohammad Sharifullah, charged with providing material support to a terrorist organization resulting in death, begins in Alexandria, Virginia. His defense claims he gave a false confession.
Mohammad Sharifullah Convicted
A federal jury convicts Mohammad Sharifullah for his role in a nine-year conspiracy to provide material support to ISIS-K, including actions related to the Abbey Gate attack. He faces up to 20 years in prison.
Fifth Anniversary and Discovery of Hidden Documents
On the fifth anniversary, Sean Parnell, chairman of the Afghanistan Withdrawal Special Review Panel, announces the discovery of previously undisclosed 'highly relevant classified documents' related to the Abbey Gate bombing, found hidden in safes.
Follow this story
Get an email when this timeline gets a major update.
🔍Deep Dive Analysis
The Abbey Gate attack occurred on August 26, 2021, amidst the frantic evacuation efforts at Hamid Karzai International Airport (HKIA) in Kabul, Afghanistan, as U.S. and allied forces withdrew and the Taliban rapidly seized control of the country. A lone ISIS-K terrorist detonated a body-worn bomb in the crowded area outside Abbey Gate, a primary entry point for evacuees. The explosion, followed by gunfire, killed 13 U.S. service members and an estimated 160 to 183 Afghan civilians, making it the deadliest day for U.S. forces in Afghanistan in over a decade.
The attack was a tragic culmination of a chaotic withdrawal. Critics point to the Biden administration's decision to withdraw from Bagram Airfield in July 2021 without notifying Afghan forces, which led to the Taliban freeing thousands of prisoners, including the Abbey Gate bomber, Abdul Rahman al-Logari, and his accomplice Mohammad Sharifullah. Intelligence warnings of an imminent attack by ISIS-K, a sworn enemy of both the Taliban and the U.S., had been circulating for days prior to the bombing. Despite these warnings, the gates remained open to facilitate the massive evacuation, placing service members and civilians at extreme risk.
Key turning points and consequences have unfolded over the years. In April 2023, the primary plotter behind the attack was reportedly killed by the Taliban. In April 2024, a U.S. Central Command (USCENTCOM) supplemental review reaffirmed earlier findings that the attack could not have been prevented at the tactical level. In 2024, the 13 American victims were posthumously awarded the Congressional Gold Medal. The attack sparked widespread grief and calls for accountability, particularly from the Gold Star families, who have consistently pressed for a full accounting of the events leading up to the tragedy.
As of August 26, 2026, significant developments continue. Mohammad Sharifullah, an Afghan national and ISIS-K member accused of providing surveillance for the attack, was apprehended in 2025 and extradited to the U.S. His trial began in April 2026, where he was convicted by a federal jury on April 29, 2026, for participating in a nine-year conspiracy to provide material support to a designated foreign terrorist organization. He faces up to 20 years in prison. On the fifth anniversary of the attack, August 26, 2026, Sean Parnell, Senior Advisor to the Secretary of War and Chairman of the Afghanistan Withdrawal Special Review Panel, announced the discovery of previously hidden classified documents pertinent to the investigation. Parnell stated that these documents, found stashed in safes, raised questions about why they had been withheld and pledged a thorough investigation to provide the American people and the victims' families with the full picture. This ongoing review underscores the persistent demand for transparency and accountability surrounding the chaotic withdrawal and the devastating attack.
What If...?
Explore alternate histories. What if Abbey Gate (Kabul Airport Attack) made different choices?