trying to put pressure on it so it can resolve behind the scenes? >> you can put a nefarious construction or a benign, and it doesn't matter what putin does, donald trump never says a bad word against him and that's based on his past conduct. on the other hand you can draw a more benign conclusion that perhaps there are negotiations going on behind the scenes for exactly that swap and he doesn't want to mess them up with public pronouncements, but when you have heard about donald trump being careful about what he says in public. >> it seems like that's the only leverage the u.s. has in a case like this is some sort of a swap. >> that's why they do these things, because they know the u.s. doesn't go out and arrest somebody for political purposes, and we have to have a reason to arrest somebody. the russians can arrest anybody they want for any reason they want. they can just grab any american