THE DETAILS of the U.S. government’s descent into torture as an anti-terrorism tactic have been publicly rehearsed many times in the 18-plus years since the Sept. 11, 2001, attacks. Nevertheless, the mistreatment of alleged al-Qaeda detainees at CIA “black site” prisons around the world retain their power to shock. Read More.

When the C.I.A. strapped down Khalid Shaikh Mohammed at a secret site in Poland in 2003, those inside the cell included a three-man waterboarding team, black-masked guards — and a doctor. The doctor’s stated role was to monitor the health of the detainee. He also kept count of each near drowning. Read More.

Director Sara Colangelo’s “Worth,” featured among this year’s Premieres at the Sundance Film Festival, is poised to become one of the Park City fest’s biggest breakouts. The film dives into the aftermath of the 2001 attacks on the World Trade Center and the Pentagon, as Congress appoints attorney Kenneth Feinberg (Michael Keaton) to spearhead the September 11 Victim Compensation Fund. More.

Five men are facing charges in the United States military tribunal at Guantánamo Bay of aiding the 19 men who hijacked passenger planes and crashed them into the World Trade Center, Pentagon and a Pennsylvania field on Sept. 11, 2001. The charges, which carry the death penalty, include conspiracy, murder in violation of the law of war and terrorism. More.

On Saturday, February 1, the 9/11 Memorial Museum celebrated the opening of the new special exhibition, K-9 Courage, with a family-friendly K-9 festival. This event drew awareness to the diverse contributions of dogs to the rescue and recovery effort and featured tours of the exhibition. More.

On the morning of Sept. 11 last year, about two dozen family members of those killed in the terror attacks filed into the White House to visit with President Trump. It was a choreographed, somewhat stiff encounter, in which each family walked to the center of the Blue Room to share a moment of conversation with Trump and the first lady, Melania Trump, before having a photograph taken with the first couple. Still, it was an opportunity the visitors were determined not to squander.

Khalid Sheikh Mohammed will appear in a Guantanamo Bay courtroom this week, more than 18 years after the 9/11 terrorist attacks he is alleged to have masterminded and a year before he will finally face a jury. In the nearly two decades since 19 al Qaeda terrorists crashed hijacked planes into the World Trade Center buildings, the side of the Pentagon, and a field near Shanksville, Pennsylvania, killing nearly 3,000 people, the five men believed to be responsible have yet to face a trial.

Four decades ago, William Daugherty, a former CIA operative, was held hostage in Iran for 444 days. His wait for the financial compensation policymakers had promised him will now be a lot longer than that. A fund created in 2015 for the Iran hostages and other victims of state-sponsored terrorism has become a new source of cash for relatives of the victims of the Sept. 11, 2001, attacks waged by al-Qaida terrorists on New York and Washington. More.