United States invasion of Afghanistan
On the morning of 11 September 2001, al-Qaeda carried out four coordinated attacks on the United States. Four commercial passenger jet airliners were hijacked. The hijackers – members of al-Qaeda's Hamburg cell – intentionally crashed two of the airliners into the Twin Towers of the World Trade Center in New York City. Both buildings collapsed within two hours from fire damage related to the crashes, destroying nearby buildings and damaging others. The hijackers crashed a third airliner into the Pentagon in Arlington County, Virginia. The fourth plane crashed into a field near Shanksville, Pennsylvania, after some of its passengers and flight crew attempted to retake control of the plane, which the hijackers had redirected toward Washington, D.C., to target the White House or the United States Capitol. No flights had survivors. In total, 2,996 people, including the 19 hijackers, died and more than 6,000 others injured in the attacks. According to the New York State Health Department, 836 first responders, including firefighters and police personnel, had died as of June 2009.
9/11 Commission Report
In addition to identifying intelligence failures occurring before the attacks, the report provided evidence of the following:The commission also concluded 15 of the 19 hijackers who carried out the attacks were from Saudi Arabia, but the commission "found no evidence that the Saudi government as an institution or senior Saudi officials individually funded the organization" to conspire in the attacks, or that it funded the attackers even though the "report identifies Saudi Arabia as the primary source of al-Qaeda funding". (A 28-page section of an earlier, different 9/11 report included claims of greater Saudi involvement, but "did not withstand deeper scrutiny" by the Commission.)
Mohamed Atta, the leader of the attacks, was from Egypt. Two hijackers were from the United Arab Emirates, and one was from Lebanon. According to the commission, all 19 hijackers were members of the al-Qaeda terrorist organization, led by Osama bin Laden. In addition, while meetings between al-Qaeda representatives and Iraqi government officials had taken place, the panel had no credible evidence that Saddam Hussein had assisted al-Qaeda in preparing or executing the 9/11 attacks.