Litvinenko inquiry: Putin 'probable involvement'

The murder of ex-Russian spy Alexander Litvinenko in 2006 was "probably" approved by Russian President Vladimir Putin, a public inquiry has found.

Mr Litvinenko died from acute radiation syndrome on 23 November 2006, three weeks after drinking tea containing polonium-210 in the hotel bar in central London's Mayfair, the inquiry concluded.

The BBC's Daniel Sandford reports.