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Declassified Files Reveal Early Warnings of 9/11 Plot

By Geopolitics Desk · 2026-09-12 · 3 min read
A stack of aged, manila file folders with redacted black bars on the paper, sitting on a wooden desk next to a vintage rotary telephone.
Illustration: Tradingbird

Newly released documents detail repeated intelligence briefings from 1998 to 2001 that identified Al Qaeda’s intent to hijack aircraft, prompting renewed scrutiny of pre-attack government responses.

The Trump administration released a collection of formerly classified documents on Friday, marking the 25th anniversary of the September 11 attacks. According to the release, these files confirm that both President Bill Clinton and President George W. Bush received specific intelligence warnings regarding Al Qaeda’s plan to use hijacked passenger jets as weapons. The documents span several years and detail a progression of threat assessments that identified the group’s intent to strike the United States.

This release adds significant weight to previous post-attack assessments that suggested Washington did not act decisively enough to counter the emerging threat. By making these records public, the administration provides a detailed timeline of the intelligence community’s understanding of the plot, including specific references to training activities and potential target sites discussed in presidential daily briefs.

Early Intelligence Identified Hijacking Threats

One of the most striking details in the newly declassified material is a December 1998 memorandum prepared for President Clinton. The document warned that Osama bin Laden was preparing to hijack U.S. aircraft and noted that members of his network had received specific training for such operations. According to the brief, sources indicated that bin Laden might implement these plans before the start of Ramadan that year.

The files also reference a "trial run" at an unidentified New York airport, where operatives allegedly evaded security checks. This suggests that the intelligence community was aware of operational testing well before the 2001 attacks. Such details provide a concrete link between the 1998 intelligence and the subsequent events, highlighting the specific nature of the warnings received by the White House.

Further documents from 1999 and 2000 describe additional reports of suspicious activity and seized manifestos that identified potential targets, including the Statue of Liberty and the Eiffel Tower. These records illustrate a pattern of escalating threat indicators that were communicated to senior officials, yet the specific mechanism of a suicide hijacking remained the primary concern in later briefs.

Escalating Warnings Under Bush Presidency

The release also includes the infamous July 25, 2001, memo titled "Bin Laden Determined to Strike in US." This document states that Al Qaeda members, including some U.S. citizens, had resided in or traveled to the United States for years, maintaining a support structure capable of aiding attacks. It notes that bin Laden expressed a desire to retaliate in Washington after U.S. missile strikes in Afghanistan in 1998.

By August 2001, the FBI was conducting approximately 70 full field investigations across the country that it considered related to bin Laden. The files indicate that these investigations included surveillance of federal buildings in New York. This surge in investigative activity underscores the heightened level of concern within law enforcement agencies in the weeks leading up to the attacks.

Historical Context and Public Reaction

The timing of this release, coinciding with the 25th anniversary of the attacks, has prompted a renewed public debate about the effectiveness of pre-9/11 intelligence sharing. As reported by GN geopolitics/terror (en-US), the documents serve as a primary source for understanding the internal deliberations of the administration at the time. They offer a granular look at how intelligence was framed and delivered to decision-makers.

While the documents confirm that specific warnings were issued, they do not fully explain the mechanisms of failure that allowed the attacks to proceed. Analysts note that the release provides evidence of awareness but leaves questions open regarding the prioritization of resources and the inter-agency coordination required to prevent such an event. The focus remains on what can be learned from this historical record to improve future security protocols.

Based on reporting by New York Post, compiled by the Tradingbird desk.

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