"Russia saw Navalny as a threat." Russian opposition leader Alexei Navalny was killed two years ago, using a poison developed from a dart frog toxin, the UK Foreign Office has said. UK Foreign Secretary Yvette Cooper said: "Only the Russian government had the means, motive and opportunity to deploy this lethal toxin against Alexei Navalny during his imprisonment in Russia." Cooper met with Navalny's widow Yulia Navalnaya at the conference this weekend. Tap the link in BBCNews's bio to find out which other countries have joined the UK in accusing Russia of the poisoning. #AlexeiNavalny #Russia #UK #BBCNews