Drawn from daily intelligence briefings given to Presidents Bill Clinton and George W. Bush, CIA Director John Ratcliffe called it “the single largest release of CIA analysis related to 9/11 ever.”

CIA declassifies presidential briefings that trace al-Qaeda threats to hijack plans and target US cities before 9/11

A September 10, 1998 brief — parts of which have been redacted — says that Al-Qaeda “may fly an explosive-packed aeroplane into a US city”.