Navalny warns of potential life sentence for terrorism charges.

Jailed Russian opposition leader, Alexei Navalny, has said he is being investigated on terrorism charges which could see him imprisoned beyond 2050. He is already facing 11-and-a-half years in prison on a range of charges, which supporters say are trumped-up. Another leading opposition figure, former Yekaterinburg Mayor Yevgeny Roizman, has gone on trial. He has pleaded not guilty to charges of discrediting Russia's armed forces. Russia has intensified a crackdown on its critics at home since invading Ukraine last year, with many in exile or behind bars.