CIA Releases Pre-9/11 Files on Al-Qaeda Threats

The CIA has released dozens of presidential daily briefs and other documents from before the September 11, 2001 attacks, revealing years of warnings about al-Qaeda and its plans to use airplanes as weapons. The files show that President Bill Clinton was warned about the threat posed by Osama bin Laden, and that the agency had intelligence on possible "explosive airplane" plots well before the attacks. The documents provide new insight into what U.S. officials knew in the years leading up to 9/11. The release comes as the 25th anniversary of the attacks approaches.