The head of the US Central Intelligence Agency said Tuesday that terrorism could not be ruled out in the disappearance of a Malaysian airliner, describing the plane's fate as a "mystery."
CIA Director John Brennan said there had been reports of claims of responsibility for downing the missing jet, but stressed that these were far from confirmed.
"I think there's a lot of speculation right now -- some claims of responsibility that have not been, you know, confirmed or corroborated at all," he said.
"We are looking at it very carefully."
Brennan provided no further details, but his c...