Nation & World Where U.S. has lost ground since 9/11 Moderator Meghan O’Sullivan (from left), Joseph Pfeifer, Nancy Gibbs, and Michael Mullen. Niles Singer/Harvard Staff Photographer Clea Simon Harvard Correspondent September 10, 2026 5 min read FDNY chief, admiral who survived Pentagon attack, Time journalist say decline in national unity since then is perhaps most damaging problem After the terrorist attacks on Sept. 11, 2001, the nation rallied under the cry “Never forget.” But 25 years later, several lessons that emerged from that day of death and destruction have been forgotten, according to a panel of experts at a John F. Kennedy Jr. Forum at the Institute of Politics on Tuesday night....