You told Peter Alexander you were reluctant to “compromise sources and methods.” We can understand that concern better than most Americans. We would remind you, though, that at critical junctures in the past, your predecessors made judicious decisions to give higher priority to buttressing the credibility of U.S. intelligence-based policy than to protecting sources and methods. With the Kremlin widely accused by politicians and pundits of “an act of war,” this is the kind of textbook case in which you might seriously consider taking special pains to substantiate serious allegations with hard intelligence – if there is any.