russia but that one russian national actually offered cohen, quote, political synergy between the kremlin and the trump campaign. cohen, who pleaded guilty to eight federal crimes this summer and was charged with one count of lying to congress by mueller s office, is set to be sentenced next week. joining me now to discuss all of this is bruce single, he worked with robert mueller in the u.s. attorney s office in boston. good morning to you, bruce. reporter: good morning. thank you very much for being with us. we re kind of going through these filings from yesterday. there s a lot of moving pieces here. you work obviously you worked with mueller and you work in this sort of work. what are what conclusions are you drawing from these this morning? the biggest conclusion is that not surprisingly mueller knows much more than we know, and much of what he knows is tantalizing in the way it s hinted at in these papers. in the cohen paper, for example, from mueller s office.