Analysis of openly available sources indicates that a British report shared with the US in December 1998 described an early stage of the 9/11 plot.
Two extracts from Presidential Daily Briefs (PDB) are given some prominence in the 9/11 Commission report into the terrorist attacks in New York and Washington on 11 September 2001. One is from a PDB delivered to President Bill Clinton on 4 December 1998, and the other is from a PDB given to President George W Bush on 6 August 2001. Both are presented inside a textbox, and both contain intelligence ‘from a friendly government’ which provided the first and only significant suggestion that Al-Qa’ida (AQ) planned to hijack aircraft in the US.
Eight months after the attacks, under Congressional pressure, the Bush administration was obliged to reveal some details of the PDBs, and on 17 May 2002 the New York Times disclosed that ‘the report provided to the president on Aug. 6, which warned him that Mr. bin Laden's followers might hijack airplanes, was based on 1998 intelligence data drawn from a single British source, government officials said today’. The British government was obliged to acknowledge that the intelligence came from British sources. The Guardian reported on 18 May that ‘The memo received by Bush on 6 August contained unconfirmed information passed on by British intelligence in 1998’. The Independent ran much the same story with additional detail.
