'Moscow will not respond to the British request about a clandestine Soviet chemical weapon allegedly used in an ex-double agent’s poisoning until a sample of the agent is provided, the Russian foreign minister said.
On Monday, British Prime Minister Theresa May said a chemical weapon developed under a secret Soviet program dubbed Novichok was used in the poisoning of Sergei Skripal. May demanded that Russia provide details of the program, saying otherwise London would consider the poisoning an attack directed by the Russian government.'
Details to follow.
Read more: Russia won’t respond to UK ultimatum until samples of alleged chemical weapon received – Lavrov