The UK will expel 23 Russian diplomats after Moscow refused to explain how a former spy was exposed to a nerve agent. Prime Minister Theresa May is blaming Moscow for the poisoning of an ex-Russian spy in England, calling the Kremlin "culpable". May told lawmakers in parliament it is tragic that Russian President Vladmir Putin has chosen to act this way. Former double agent Sergei Skripal and his daughter Yulia have been unconscious in a hospital since March 4th, after being exposed to a nerve agent in Salisbury.