Mr Lugovoy has denied responsibility for the murder, calling the allegations "nonsense"
Russian officials denied he had been sent to ask Mr Assad to step down
Bill Browder says ruling will give Russian President Vladimir Putin green light to order more assassinations in the UK
Russian authorities have denied any involvement in all cases
Robert Verkaik, who first revealed Litvinenko was working for the UK security services, regrets secrecy that prevented inquiry from giving a full account of the murder
‘We regret that a purely criminal case has been politicised and has darkened bilateral relations...’
Inquiry’s report details Litvinenko had excited Putin’s ire by calling him a paedophile - and the result was fatal
Mr Putin remained close to his former deputy at the FSB intelligence agency, Nikolai Patrushev, after moving into politics in 1999
Mr Litvinenko wrote an article making the accusations four months before he was poisoned
Sir Robert Owen’s report found that the operation was likely to have been directed by the FSB
As the report into the public inquiry into the former Russian spy's murder is published, we look back at the timeline up until now
Reports by Amnesty International and monitoring groups claims Russia has killed hundreds of civilians
The President is photographed in an array of settings
Vladimir Putin has given Donald Trump his full support in the US presidential race
The year in politics, summarised in painfully awkward photographs
'The Turks,' Mr Putin said, 'decided to lick the Americans in a certain place'