CIA releases dozens of declassified documents on bin Laden prior to 9/11

The CIA on the 25th anniversary of the September 11 attacks released several dozen presidential daily briefs that chronicle intelligence on Osama bin Laden and al-Qaeda in the years before the 2001 hijackings. The agency characterized the package as its largest-ever declassification of such briefs and said the move was intended to improve transparency about what officials were seeing prior to the attacks. The documents include a range of warnings presented to senior leaders. One briefer informed then-President Bill Clinton that bin Ladens "preferred option" was to strike the United States on its own soil in Washington and warned that al-Qaeda "may fly an explosive-packed airplane into a US city." A February 1998 brief titled "Terrorists Seeking WMD Capability" referenced bin Laden and other Islamic extremists, and a September 12, 2001 report cited a source claiming the plotters had planned the attacks for two years and had also targeted the U.S. Capitol. Other entries detail the operational environment around bin Laden. An April 1998 memo described the Talibans reluctance to hand over bin Laden, noting they regarded him as a guest and were hesitant to monitor him. A December 1998 report warned that conspirators had evaded security checks during a trial run at an unidentified New York airport and that some members of bin Ladens network had received hijack training. Intelligence files also documented al-Qaedas pursuit of radiological and conventional weapons: by June 1999, officials reported experiments with explosives intended to boost their energy output and referenced efforts to obtain materials for so-called "dirty bombs." Many papers in the release were redacted to protect sources and other sensitive details. Agency officials and analysts said the declassified files do not appear to overturn established accounts of how the attacks were planned or how U.S. officials later understood them, but the compilation provides a consolidated view of the warnings and concerns circulated to top policymakers in the lead-up to 9/11.