Russia's envoy to Britain said Wednesday that Moscow might respond in the next 48 hours to London's expulsion of four Russian diplomats.
Meanwhile, U.K.-based Russian billionaire Boris Berezovsky has told the BBC that British police told him of a plot against his life three weeks ago; he left the country until it was safe to return. The Sun newspaper says the assassination plot was smashed by "security chiefs" who seized the gunman at a London hotel before he could shoot.
The Russian ambassador has denied the story.
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