John Brennan, assistant to the president for homeland security and counterterrorism, speaks to reporters at a breakfast sponsored by the Christian Science Monitor on Thursday, Sept. 8, 2011, in Washington. (Michael Bonfigli/Christian Science Monitor)

Photo by: Michael Bonfigli

John Brennan, assistant to the president for homeland security and counterterrorism, speaks to reporters at a breakfast sponsored by the Christian Science Monitor on Thursday, Sept. 8, 2011, in Washington. (Michael Bonfigli/Christian Science Monitor)