There's been international condemnation of Russia, after two men suspected of carrying out a nerve agent attack at Salisbury in the UK were implicated in a deadly explosion in the Czech Republic in 2014.

The White House said it was evidence of "subversive actions" by the Russian state. The Czech Republic announced it was expelling 18 Russian diplomats.

Clive Myrie presents BBC News at Ten reporting by security correspondent Gordon Correra and Sarah Rainsford in Moscow.

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