It was "not the failure of a single individual or organization, but a systemic failure," President Obama said, taking personal responsibility: "[U]ltimately, the buck stops with me. As president, I have a solemn responsibility to protect our nation and our people, and, when the system fails, it is my responsibility."
The problem seems to be that information about Abdulmutallab wasn't cross-checked. According to the review document and John Brennan, who briefed reporters after the president spoke, the U.S. knew that 1) Abdulmutallab had been radicalized, as it was warned by his father, that 2) al Qaeda in the Arabian Peninsula (AQAP) was planning attacks on Americans in Yemen AND in the U.S., and 3) AQAP was involved with a Nigerian, now believed to be Abdulmutallab. But, as information was received by analysts at the National Counterterrorism Center and the CIA, it wasn't cross-check with Abdulmutallab's name for other information, available in a database, which meant he didn't get put on the watch-list. The review suggests information technology was part of the problem.
This article available online at:
http://www.theatlantic.com/politics/archive/2010/01/white-house-we-had-the-information-but-the-system-failed/33157/
