The new director of the CIA, David Petraeus (right), talks with Vice President Joseph R. Biden (back to camera) and John Brennan, President Obama's chief counterterrorism adviser, after Mr. Petraeus was sworn in at the White House on Tuesday. (Associated Press)

The new director of the CIA, David Petraeus (right), talks with Vice President Joseph R. Biden (back to camera) and John Brennan, President Obama's chief counterterrorism adviser, after Mr. Petraeus was sworn in at the White House on Tuesday. (Associated Press)