this is bbc news with the latest headlines for viewers in the uk and around the world. i'm lukwesa burak. the head of russia's wagner group, claims its forces now surround most of bakhmut — the eastern ukrainian city that's been the focus of intense fighting. the united nations and iran reach an agreement that would allow un officials to carry out further inspections of tehran“s nuclear programme. the only thing that matters is that we are able to inspect, that we are able to account for every gram of enriched material that is there. and this is the spirit of the exchanges, and we have been working satisfactorily in that regard. the uk government's former health secretary, matt hancock, and his staff agonised for hours over whether or not,