They set up hotlines between command centers while NORAD increased its fighter coverage and installed radar to watch airspace over the continent. The hijackers also crashed a fourth plane into a field near Shanksville, Pennsylvania after the passengers and flight crew attempted to regain control of the aircraft. Das private "International Center for 9/11 Studies" hatte erfolgreich auf Herausgabe der Videodokumente geklagt und sie nun auf seinem eigenen Kanal bei Youtube veröffentlicht. Previously Ahmadinejad had described the 9/11 attacks as a "suspect event" [267] and suggested that the Bush Administration was involved in 9/11.

There are also claims that other foreign intelligence agencies, such as the Israeli Mossad, had foreknowledge of the attacks, and that Saudi Arabia may have played a role in financing the attacks. They produce the information, spot the anomalies and technical inconsistencies, provide the technical base and form the theories. According to a 2011 analysis in a Skeptical Inquirer article, people involved in this movement, which seemingly is a disparate group with very diversified backgrounds, could be classified into three groups. According to Thierry Meyssan in conjunction with the documentary, Russian State Television aired a debate on the subject.According to an international poll that same year, huge majorities in Muslim countries prefer to believe baseless conspiracy theories rather than listen to the mainstream facts of what happened on September 11, 2001, in New York City and Washington. The ADL's report found that "The Big Lie has united American far-right extremists and white supremacists and elements within the Arab and Muslim world". On June 7, 2008, the Financial Times published a lengthy article on the 9/11 Truth Movement and 9/11 conspiracy theories.

An article in the September 11, 2006, edition of Time magazine comments that the major 9/11 conspiracy theories "depend on circumstantial evidence, facts without analysis or documentation, quotes taken out of context and the scattered testimony of traumatized eyewitnesses", and enjoy continued popularity because "the idea that there is a malevolent controlling force orchestrating global events is, in a perverse way, comforting".

Most academic and intellectual commentary has asserted that conspiracy theories constitute a dysfunctional, extremist vein on the margins of a well-designed U. Another prominent belief is that the Pentagon was hit by a missile launched by elements from inside the U. Some conspiracy theorists believe a small white jet seen flying over the crash area may have fired a missile to shoot down Flight 93. Valencia McClatchey, a local woman who took the only photograph of the mushroom cloud from the impact of Flight 93 seconds after it hit the ground, says she has been harassed over the telephone and in person by conspiracy theorists, who claim she faked the photo. S.–Japan alliance would be "severely tested" if Fujita's party continued to tolerate these kinds of comments.

When released, the book was heavily criticized by both the mainstream French and American press, and later, from within the 9/11 Truth movement. S. House of Representatives Cynthia McKinney, [185] [186] actors Daniel Sunjata, Ed Asner, and Charlie Sheen, political science professor Joseph Diaferia and journalist Thierry Meyssan.

There are various conspiracy theories that attribute the preparation and execution of the September 11 attacks against the United States to parties other than, or in addition to, al-Qaeda. Some internet videos, such as Loose Change, speculate that Flight 93 safely landed in Ohio, and a substituted plane was involved in the crash in Pennsylvania. In March 2010, The Washington Post editorialized against Yukihisa Fujita, a prominent Japanese politician who has espoused 9/11 conspiracy theories. I’ve written two books: Conspiracy Theories: Secrecy and Power in American Culture, the second edition of which was published in 2008, and The Transparency Fix: Secrets, Leaks, and Uncontrollable Government Information (2017).