That it could be with a dirty bomb or maybe even a rodeo tactical nuclear weapon, if he feels his hold on the occupied area of crimea is in any kind of jeopardy. again, there is no indication that it happens any time soon. but the officials we spoke with said it is something they're discussing. >> do we know anything about the current u.s. assessment of vladimir putin, of his hold on the country, an his position of power, but also his mental state. >> so that has been a question all along. i mean even before the invasion, the u.s. officials say that they just don't know. there are all kinds of...