Joe Biden joined former presidents Barack Obama and Bill Clinton at a memorial event in New York City, 20 years to the day since the Twin Towers fell

People in the United States and around the world have been paying tribute to those who were killed this day 20 years ago

Observances are also planned at the two other sites where the 9/11 conspirators crashed the jets: the Pentagon, and a field near Shanksville, Pennsylvania

In 2005, Adama Bah became the youngest person, and the first woman, to be arrested and accused of terrorism by the US in their in-country ‘War on Terror’. The case was bogus and she was never charged.

Twenty years on from those fateful events in New York and elsewhere, various podcasts offer insight into the day itself, and the consequences 

On the day the Twin Towers were attacked, Vickie Maye was shown a worrying X-ray of her chest. As the 20th anniversary approaches, she reflects on how she rebuilt her life 

Cork-born Ruth Clifford McCourt was taking four-year-old daughter Juliana on a holiday to Disneyland on September 11, 2001, when their flight was hijacked, writes Pádraig Hoare

The 2001 September 11 attacks were arguably the JFK moment of our times. Twenty years on, Mary McAleese, Joe Duffy, Bertie Ahern and others share their memories of the day

20 years on from 9/11

Four New York GAA men who were tragically killed at the World Trade Centre in New York City 20 years ago will be remembered on Saturday at Croke Park

Rulers have always been cognisant of the importance of having religion on their side, writes TP O’Mahony.

— terrorists and heroic passengers in United 93 film

“Radical Islam” continues to represent a “first-order security threat” 20 years after the 9/11 terror attacks on the United States, Tony Blair has warned.

Taliban spokesman Zabihullah Mujahid issued a statement, saying Panjshir was now under the control of Taliban fighters

Conflicting accounts emerged about why the flights were not able to take off from the airport at Mazar-e-Sharif as pressure ramps up on the United States to help those left behind.

President Joe Biden will visit all three 9/11 memorial sites to commemorate the 20th anniversary of the September 11 attacks and pay his respects to the nearly 3,000 people killed that day.

The order directs the Justice Department and other executive branch agencies to begin a declassification review and requires that declassified documents be released over the next six months

Marine General Frank McKenzie, head of US Central Command, has described the US relationship with the Taliban during the evacuation as 'very pragmatic and very businesslike', saying they helped secure the airport.

The United States has completed its withdrawal from Afghanistan, ending America’s longest war and closing a chapter in military history likely to be remembered for colossal failures, unfulfilled promises and a frantic final exit.

It is merely the first step in what could be a long legal journey for a case that involves evidence tainted by CIA torture, an issue that has caused other war crimes cases to languish for years at Guantanamo.

Rocket fire apparently targeting Kabul’s international airport struck a nearby neighbourhood on Monday, the eve of the deadline for American troops to withdraw from Afghanistan. It was not immediately clear if anyone was hurt.