let's get more on this now christopher granville is a co-founder of trusted sources research group british diplomat to russia. on the program tonight some of the maybes describe the various made for news an unfree news a russian u.k. relations different got so fair assessment through conference difficulties go much . seems to be a fair assessment my knowledge of the talks today during william hague's visit is limited to a few news was the commentary of your own correspondent just now as a reasonable conclusion yes and more important i think the change of government in the u.k. provides a perfect diplomatic backdrop to try to normalize relations and get them out of this rather. than which they've been stuck in because of this the one. shocking. very isolated case of. mr litvinenko well that of course does remain the main stumbling block between the two countries and foreign minister lavrov said today that moscow is ready to work on it per britain must provide details of the investigation which the u.k. has always refused to do in the past what you think are going to work together under this