On the 25th anniversary of 9/11, a divided U.S. gathers to remember and grieve

The United States marks the 25th anniversary of the September 11 terrorist attacks with global commemoration ceremonies. The nation pauses to mourn nearly 3,000 victims killed when al-Qaida hijackers crashed four airliners into the World Trade Center, the Pentagon, and a field in Pennsylvania. While events honor those lost, the U.S. remains divided regarding the meaning and legacy of the attacks. Comprehensive coverage includes personal stories from survivors as the world remembers the 2001 tragedy.