Police Senior National Co-ordinator Delivers Update On The Salisbury Poisoning Incident

LONDON, ENGLAND - MARCH 13: Deputy Assistant Commissioner Neil Basu speaks to the media outside New Scotland Yard as he gives the lastest update on the poisoning of Sergei Skripal on March 13, 2018 in London, England. British Prime Minister Theresa May has given the Russian government a deadline of midnight tonight to explain why a nerve agent of Russian origin was used in the poisoning of former Russian agent Sergei Skripal and his daughter. Mr Skripal who was granted refuge in the UK following a 'spy swap' between the US and Russia in 2010 and his daughter remain critically ill after being attacked with a nerve agent. (Photo by Christopher Furlong/Getty Images)