The 9/11 Commission Report is a comprehensive document published in 2004 that investigates the events surrounding the terrorist attacks on September 11, 2001. It was created by the National Commission on Terrorist Attacks Upon the United States, commonly known as the 9/11 Commission. The report details how the attacks were planned and executed by the terrorist group al-Qaeda, led by Osama bin Laden. The report also examines the failures of U.S. intelligence and security agencies before the attacks, highlighting the need for improved coordination and communication. It provides recommendations to enhance national security and prevent future terrorist attacks, emphasizing the importance of international cooperation and intelligence sharing.