Britain accuses Russia of secretly stockpiling nerve agent used in attack

LONDON, Mar 18 (Reuters): British Foreign Secretary Boris Johnson said on Sunday that Russia has been stockpiling the deadly nerve agent used to poison a Russian former double agent in England and has been investigating how such weapons can be used in assassinations.

Britain has said Russia used the Soviet-era nerve agent called Novichok to attack Sergei Skripal and his daughter Yulia in the first known offensive use of such a weapon on European soil since World War Two. Russia has denied any involvement.