third into the Pentagon, and a fourth, originally intended to target either the United States Capitol or the White House, crashed in a field in Stonycreek Township near Shanksville, Pennsylvania. It was the deadliest foreign attack on American soil since the Japanese attack on Pearl Harbor on December 7, 1941, and to this day remains the deadliest terrorist attack in human history. The attacks were conducted by Al-Qaeda, acting in accord with the 1998 fatwa issued against the US and its allies by persons under the command of bin Laden, al-Zawahiri, and others. Evidence points to suicide squads led by Al-Qaeda military commander Mohamed Atta as the culprits of the attacks, with bin Laden, Ayman al-Zawahiri, Khalid Sheikh Mohammed, and Hambali as the key planners and part of the political and military command. Messages issued by bin Laden after September 11, 2001, praised the attacks, and explained their motivation while denying any involvement. Bin Laden legitimized the attacks by identifying grievances felt by both mainstream and Islamist Muslims, such as the general perception that the US was actively oppressing Muslims. Bin Laden asserted that America was massacring Muslims in "Palestine, Chechnya, Kashmir and Iraq" and Muslims should retain the "right to attack in reprisal". He also claimed the 9/11 attacks were not targeted at people, but "America's icons of military and economic power", despite the fact he planned to attack in the morning when most of the people in the intended targets were present and thus generating the maximum number of human casualties. Evidence later came to light that the original targets for the attack may have been nuclear power stations on the US East Coast. The targets were later altered by Al-Qaeda, as it was feared that such an attack "might get out of hand". Designation as a terrorist group Al-Qaeda is deemed a designated terrorist group by the following countries and international organizations: designated Al-Qaeda's Turkish branch United Nations Security Council War on terror In the immediate aftermath of the 9/11 attacks, the US government responded, and began to prepare its armed forces to overthrow the Taliban, which it believed was harboring Al-Qaeda. The US offered Taliban leader Mullah Omar a chance to surrender bin Laden and his top associates. The first forces to be inserted into Afghanistan were paramilitary officers from the CIA's elite Special Activities Division (SAD). The Taliban offered to turn over bin Laden to