Foreign Secretary says UK wants action taken on Russia after Navalny's death

The UK is demanding action after fresh evidence revealed Russian political prisoner Alexei Navalny was killed with a rare frog poison, said Foreign Secretary Yvette Cooper. Navalny, a prominent critic of President Vladimir Putin, died suddenly in a Siberian prison on charges widely seen as fabricated. European laboratories have now confirmed the use of the obscure toxin. In a BBC interview, Cooper claimed that only the Russian government had the 'means, motive and opportunity' to carry out the assassination.