Afghanistan, Sept. 11 -- The September 11, 2001 terrorist attacks killed nearly 3,000 people and reshaped U.S. and global security, driving sweeping counterterrorism measures and unprecedented international cooperation.
The September 11, 2001 terrorist attacks remain one of the most defining events of modern history, transforming U.S. security policy and reshaping global cooperation against terrorism.
On that morning, al-Qaeda hijackers commandeered four planes. Two struck New York's Twin Towers, leading to their collapse. A third hit the Pentagon, while the fourth crashed in Pennsylvania after passengers resisted.
Nearly 2,977 people were killed and more than 6,000 injured. The victims came from different nations, and the destruction ca...