Russia link to Litvinenko death to be examined
20 September 2012 Last updated at 19:07 BST
An inquest into the death of the former Russian spy Alexander Litvinenko will examine claims that the Russian government was involved in his death.
Mr Litvinenko, a British citizen, died from polonium poisoning after having tea with two Russians at a central London hotel six years ago.
The prime suspect, Andrei Lugovoi, has been elected as a Russian MP, and Mr Litvinenko's widow Marina says she believes the Russian government was responsible.
Gordon Corera reports.