Hazmi and Mihdhar arrived in the United States in mid-January 2000.
In spring 2000, Hazmi and Mihdhar took flying lessons in San Diego, California, but both spoke little English, performed poorly with flying lessons, and eventually served as secondary – or "muscle" – hijackers.
Two particularly important publications were bin Laden's 2002 "Letter to America", In 1996, bin Laden issued a fatwā calling for American troops to leave Saudi Arabia.
In 1998, al-Qaeda wrote, "for over seven years the United States has been occupying the lands of Islam in the holiest of places, the Arabian Peninsula, plundering its riches, dictating to its rulers, humiliating its people, terrorizing its neighbors, and turning its bases in the Peninsula into a spearhead through which to fight the neighboring Muslim peoples." The fatwā declared that "the ruling to kill the Americans and their allies – civilians and military – is an individual duty for every Muslim who can do it in any country in which it is possible to do it, in order to liberate the al-Aqsa Mosque and the holy mosque of Mecca from their grip, and in order for their [the Americans'] armies to move out of all the lands of Islam, defeated and unable to threaten any Muslim." Bin Laden claimed, in 2004, that the idea of destroying the towers had first occurred to him in 1982, when he witnessed Israel's bombardment of high-rise apartment buildings during the 1982 Lebanon War. into a broader war against the Islamic world in the hope of motivating more allies to support al-Qaeda.
soon." He asked the FBI and the State Department to alert the embassies and police departments, and the Defense Department to go to "Threat Condition Delta." Clarke would later write that "Somewhere in CIA there was information that two known al Qaeda terrorists had come into the United States...
in [the] FBI there was information that strange things had been going on at flight schools in the United States... The same day in July, Margarette Gillespie, an FBI analyst working in the CTC, was told to review material about the Malaysia meeting.
Many countries strengthened their anti-terrorism legislation and expanded the powers of law enforcement and intelligence agencies to prevent terrorist attacks. The building was officially opened on November 3, 2014.Within an hour and 42 minutes, both 110-story towers collapsed, with debris and the resulting fires causing partial or complete collapse of all other buildings in the World Trade Center complex, including the 47-story 7 World Trade Center tower, as well as significant damage to ten other large surrounding structures.A third plane, American Airlines Flight 77, was crashed into the Pentagon (the headquarters of the United States Department of Defense) in Arlington County, Virginia, leading to a partial collapse of the building's western side.In 20, bin Laden again connected the September 11 attacks with U. support of Israel, although most of the letter expressed bin Laden's disdain for President Bush and bin Laden's hope to "destroy and bankrupt" the U. Other motives have been suggested in addition to those stated by bin Laden and al-Qaeda, including western support of Islamic and non-Islamic authoritarian regimes in Saudi Arabia, Iran, Egypt, Iraq, Pakistan and northern Africa, and the presence of western troops in some of these countries. Similarly, others have argued that 9/11 was a strategic move with the objective of provoking America into a war that would incite a pan-Islamic revolution.In late 1998 or early 1999, bin Laden gave approval for Mohammed to go forward with organizing the plot.They had specific information about individual terrorists... She was not told of the participants' presence in the U. The CIA gave Gillespie surveillance photos of Mihdhar and Hazmi from the meeting to show to FBI counterterrorism, but did not tell her their significance. that the attack's codename was "The Big Wedding", and that it involved airplanes.