Yeah, France shared information about Moussaoui, Russia shared information about Tsarnaev, so it's hard to imagine U.S. withholding similar kind of information

Yeah, France shared information about Moussaoui, Russia shared information about Tsarnaev, so it's hard to imagine U.S. withholding similar kind of information in similar situations, so it was probably a bluff. But still, that's playing hardball.