May- July 2001: Over a two-month period, the NSA reports that “at least 33 communications indicating a possible, imminent terrorist attack.”
- May 16-17, 2001: US Warned Bin Laden Supporters inside US and Planning an Attack
- May 29, 2001: Clarke (ex US Head of Counter Terrorism) Asks for More to Be Done to Stop Expected Al-Qaeda Attacks
- May 30, 2001: FBI Is Warned of Major Al-Qaeda Operation in the US Involving Hijackings, Explosives, and/or New York City
- June 2001: Germans Warn of Plan to Use Aircraft as Missiles on US and Israeli Symbols
- June 2001: US Intelligence Warns of Spectacular Attacks by al-Qaeda Associates
- June-July 2001: Terrorist Threat Reports Surge, Frustration with White House Grows
- Summer 2001: Threat Alerts Increase to Record High
- Summer 2001: Israel Warns US of ‘Big Attack’
- Summer 2001: Al-Qaeda Plot Described as Upcoming ‘Hiroshima’ on US Soil
- June 21, 2001: Senior Al-Qaeda Officials Say Important Surprises Coming Soon
- June 22, 2001: CIA Warns of Imminent Al-Qaeda Suicide Attack
- June 23, 2001: White House Warned ‘Bin Laden Attacks May Be Imminent’
- June 25, 2001: Clarke Tells Rice That Pattern of Warnings Indicates an Upcoming Attack
- June 28, 2001: Tenet (ex CIA Director) Warns of Imminent Al-Qaeda Attack
- June 28, 2001: Clarke Warns Rice That Threat Level Has Reached a Peak
- Late Summer 2001: Jordan Warns US That Aircraft Will Be Used in Major Attack Inside the US
- July 2001: India Warns US of Possible Terror Attacks
- July 1, 2001: Senators Warn of Al-Qaeda Attack Within Three Months
- July 5, 2001: Ashcroft (ex US Attorney General) Is Warned of Imminent, Multiple Attacks from Al-Qaeda
- July 6, 2001: CIA Warns Upcoming Al-Qaeda Attack Will Be ‘Spectacular’ and Different
- July 6, 2001: Clarke Tells Rice to Warn Agencies to Prepare for 3 to 5 Simultaneous Attacks; No Apparent Response
- July 10, 2001: FBI Agent Sends Memo Warning That Inordinate Number of Muslim Extremists Are Learning to Fly in Arizona
- July 10, 2001: CIA Director Gives Urgent Warning to White House of Imminent, Multiple, Simultaneous Al-Qaeda Attacks, Possibly Within US
- July 16, 2001: British Spy Agencies Warn Al-Qaeda Is in The Final Stages of Attack in the West
- Late July 2001: Taliban Foreign Minister Tries to Warn US and UN of Huge Attack Inside the US
- Late July 2001: Argentina Relays Warning to the US
- Late July 2001: Egypt Warns CIA of 20 Al-Qaeda Operatives in US; Four Training to Fly; CIA Is Not Interested
- Late July 2001: CIA Director Believes Warnings Could Not ‘Get Any Worse’
- August 2001: Russia Warns US of Suicide Pilots
- Early August 2001: Government Informant Warns Congressmen of Plan to Attack the WTC
- Early August 2001: Britain Warns US Again; Specifies Multiple Airplane Hijackings
- August 6, 2001: Bush Briefing Titled ‘Bin Laden Determined to Strike in US’
- August 8-15, 2001: Israel Reportedly Warns of Major Assault on the US
- August 15, 2001: CIA Counterterrorism Head: We Are Going to Be Struck Soon
- August 23-27, 2001: Minnesota FBI Agents ‘Absolutely Convinced’ Moussaoui Plans to Hijack Plane; They Are Undermined by FBI Headquarters
- August 23, 2001: Mossad Reportedly Gives CIA List of Terrorist Living in US; at Least Four 9/11 Hijackers Named
- August 30, 2001-September 4, 2001: Egypt Warns al-Qaeda Is in Advanced Stages of Planning Significant Attack on US
- September 4, 2001: Mossad Gives Another Warning of Major, Imminent Attack
- September 10, 2001: NSA Intercepts: ‘The Match Begins Tomorrow’ and ‘Tomorrow Is Zero Hour’
- September 10, 2001: US Intercepts: ‘Watch the News’ and ‘Tomorrow Will Be a Great Day for Us’