What really happened on September 11th—and why do so many 9/11 conspiracy theories still persist 25 years later?

In this episode of The Brief: Insights From The Inside, Shabbos Kestenbaum sits down with Gerald Posner, investigative journalist and author of Why America Slept: The Failure to Prevent 9/11, to revisit the September 11th terrorist attacks on their 25th anniversary.

Posner explains the official account of 9/11, the intelligence failures between the CIA and FBI, the missed warnings before the attack, and why he believes the evidence points to incompetence—not an inside job. He also responds to some of the most common 9/11 conspiracy theories, including “let it happen on purpose,” Donald Rumsfeld’s $2.3 trillion Pentagon statement, the “Dancing Israelis,” Larry Silverstein and “pull it,” World Trade Center 7, “jet fuel can’t melt steel beams,” the Pentagon missile theory, Flight 93, and unanswered questions about Saudi knowledge before the attack.