the london focus, but worry about the implications. >> the apprehension, the impression that i got, was apprehension is that they may get drawn into or are getting drawn into american politics. >> reporter: president trump's obsession with discrediting mueller could cost america the trust of its allies. you have to go back really to the 1940s to try to find a case where the british intelligence services would have been working inside, side by side, with u.s. intelligence services but providing information about that service and at that time that was all about catching a russian mole. this is something, of course, entirely different. >> nic, important reporting. thank you. before you go, you have the uk elections coming up. how does barr's investigation and the president play into that? >> you know, anything that