Alexander Litvinenko pre-inquest review set to open
The widow of former Russian spy Alexander Litvinenko has told the BBC she hopes an inquest will find the truth about what happened to him.
Mr Litvinenko, 43, is thought to have been poisoned with polonium-210 after having tea with two Russians at a central London hotel in November 2006.
A former Russian security officer who had obtained asylum in Britain, his death led to a major diplomatic incident as the Kremlin was accused of masterminding his murder.
Gordon Corera reports.