BRITAIN-RUSSIA-POISON-NOVICHOK

Police tape is seen cordoning off the front door of a residential address in Amesbury, southern England, on July 5, 2018 where police reported a man and woman were found unconscious in circumstances that sparked a major incident after contact with what was later identified as the nerve agent Novichok. - British police scrambled on July 5, to determine how a couple were exposed to the same nerve agent, Novichok, used on a former Russian spy earlier this year, leaving them critically ill. The couple were taken ill on Saturday in Amesbury, close to the city of Salisbury, where former double agent Sergei Skripal and his daughter Yulia were found slumped on a bench on March 4, in an incident that sparked a diplomatic crisis with Russia. (Photo by Chris J Ratcliffe / AFP) (Photo by CHRIS J RATCLIFFE/AFP via Getty Images)