The document discusses terrorism and the events of September 11, 2001. It defines terrorism as unlawful violence used to intimidate societies and achieve political, religious, or ideological goals. It notes that 9/11 was an act of international terrorism directed by foreign groups. The attacks were intended to end American global influence, but American influence has continued. The immediate reactions to 9/11 included declaring it a national tragedy, offering help to victims and families, and launching a full investigation to find those responsible. Countries around the world expressed solidarity and mourned the losses from the attacks.