>> just to explain to people your process. when i was at "newsweek," i was cautious about anonymous sources because you don't want to create the opportunity for something that can't be checked. if you say something happened at a meeting and you have a quotation where say the president said something or the secretary of defense said something, how do you arrive at that quotation? >> from somebody who is there, you -- lots of people keep diaries. there are extensive votes. and in many cases, documentations of this. you can find other people in the room, and check it and then go back to the original source. this is the joy of having time so you can maybe work on one meeting or one event and you've done a great number of interviews. and checked it and you get to a