A police officer stands guard outside the home of Nikolai Glushkov in London, Britain. Photograph: Peter Nicholls/Reuters

British police have launched a murder investigation into the death of the Russian businessman Nikolai Glushkov after a pathologist concluded he died f(...)

A police officer stands guard outside the home of Nikolai Glushkov in London, Britain. Photograph: Peter Nicholls/Reuters

British counter-terrorism police were on Tuesday investigating the unexplained death of a Russian associate of late tycoon Boris Berezovsky but said (...)