for that i'm joined by michael leiter. he was the director of the national counter-terrorism center from 2007 to 2011, during both the george w. bush and obama administrations. and, alexander meleagrou- hitchens, research director of the program on extremism at the george washington university. michael leiter, i want to start with you. the british intelligence agencies seemed a little concern the name of the bomber was leaked by u.s. officials hours before british authorities made that public. is that significant? >> i think it is, hari. as an investigator, you really don't want to release information until you have a purpose in doing so, and as the british were clearly investigating other elements of this attack, or at least trying to determine whether there were additional people involved or potential follow-on attacks, it makes good sense those investigators might want to keep that name behind the green curtain until they found use in disclosing it. it's unfortunate that information was disclosed, but, unfortunately, in