an investigation into itself. the issue, how a cia top agent in afghanistan was exposed during the president's surprise trip to the country. now the agent's top secret and dangerous mission could be in jeopardy. cnn's my zell kosinski is at the white house more. how can the white house investigate itself and what does it think it can find? >> hi, chris. at first the white house didn't have comment about this incident but now it's announced the chief of staff has asked white house council to thoroughly look at how this happened and look at the processes involved and then make recommendations so that it doesn't happen again. what we do know about how it happened was that a pool reporter who was covering the president's trip to afghanistan had asked a white house staffer for a list of people who would be briefing the president. standard practice. that staffer asked the military for a full list. and somehow on that list was the name and title of the top cia officer in afghanistan. it was then distributed widely