and not be caught off guard. >> ken dilanian, can you remind our viewers of the role of rod rosenstein in this process? the relationship between him and mueller and why it's crucial here and why mueller would have had to have given him a heads up. >> well, because attorney general jeff sessions has recused himself from this investigation, brian, rod rosen see rosenstein, the deputy attorney general, is the person at the justice department who is overseeing this special counsel investigation. he approves the budget and he gets regular reporting on the scope. in fact he negotiates the scope. but if mueller wants to expand the scope of his investigation, he needs rosenstein's permission. so he plays a crucial role here. and in fact, you know, he played a role in getting mueller appointed. he is the reason mueller is there. >> matthew miller, there's another name in the news, dana