UK races to find source of poison used against Russia ex-spy
Sergei Skripal is in a critical condition in hospital along with his daughter after they collapsed on a bench in the English city of Salisbury Kommersant Photo/AFP / Yuri SENATOROV

British detectives on Thursday scrambled to find the source of the nerve agent used in the attempted murder of a Russian former double-agent and his daughter. ... happened, but Foreign Secretary Boris Johnson has alluded to Russia. He noted the "echoes" with the 2006 poisoning in London of former Russian spy and Kremlin critic Alexander Litvinenko, which Britain has ...