India, Sept. 12 -- The CIA has released 71 previously classified President's Daily Brief (PDB) products marking the 25th anniversary of the September 11, 2001, Twin Towers attacks.

These files offer a detailed look at how US intelligence tracked Osama bin Laden and al-Qaida in the years before the attacks. The documents, spanning 1998 to September 12, 2001, show repeated warnings about the terror network's intentions, capabilities and efforts to target the United States.

The September 11, 2026, release is the CIA's largest collection of declassified PDB products specifically related to 9/11. The agency said the documents contain more than 100 pages of analysis that are now publicly available.

Here are five key takeaways from the files....