Members of the military remove a police car and other vehicles from a public car park during the investigation into the poisoning of Sergei and Yulia Skripal in Salisbury, southern England, with the nerve agent novichok. Getty
Members of the military remove a police car and other vehicles from a public car park during the investigation into the poisoning of Sergei and Yulia Skripal in Salisbury, southern England, with the nShow more

World faces rising threat of chemical attacks, says UK defence minister