The identities and roles of the 19 al-Qaeda members who hijacked four passenger aircraft remain central to the historical ...

Al-Qaeda's deadly attacks on Sept. 11, 2001, shook the world and launched a cycle of war that outlasted its reign as the ...

All 19 hijackers were al-Qaeda members, divided among the four planes. Here's a look at who they were and who else was ...

EXPLAINER-What's happened to al Qaeda in the 25 years since 9/11?

A quarter of a century after the deadliest terrorist attacks in US history, al Qaeda’s various branches have moved away from ...

The leadership and locations have changed, but al Qaeda is still operating over large areas.

A parade and ceremony has honoured a Cornish hero who died saving thousands of lives during the 9/11 World Trade Center attacks in New York 25 years ago. Rick Rescorla was head of ...

The government ensured that there would be no end to the public's fears—and no real justice for bin Laden's victims.

Bill Maher left a chair empty for beloved guest Barbara Olson after she died aboard hijacked Flight 77 while traveling to ...

25 years after the September 11 attacks, this is a remarkable snapshot. Al-Qaeda — which means "the base" in Arabic — has ...

The director of national intelligence was supposed to ensure spy agencies would never again fail to “connect the dots.” Now, ...