Al Qaeda could regain ability to threaten U.S. in as little as a year, intel chiefs say

Al Qaeda could reconstitute in Afghanistan and regain the capability to threaten the U.S. in "one to two" years, intelligence chiefs said Tuesday, revising downward estimates that were previously issued by the Pentagon.  

"The current assessment, probably conservatively, is one to two years for al Qaeda to build some capability to at least threaten the homeland," said Lieutenant General Scott Berrier, director of the Defense Intelligence Agency (DIA), at an annual summit hosted by the Intelligence and National Security Alliance, with panels moderated by CBS News.

"That said, DIA is not going to take…their eye off the ball of terrorism," Berrier said.