The head of the British laboratory of Porton Down, Gary Aitkenhead, said that scientists could not determine whether the country of origin of the nerve agent “Novichok”, used to poison the Skripals, is Russia. This was reported on Sky News and occurs against the backdrop of Teresa May’s words that it is “highly likely” that Russia is responsible, or the US State Department who claim “there is no other possible explanation.”
He stressed that “we could not define its exact source, but we provided scientific information on the agent to the government, who then used a number of other sources to draw conclusions,”
The poisoning of the Skripals occurred on March 4, 2018 in the British city of Salisbury. London accused Moscow of attacking the state and sent 23 Russian diplomats home. The example of the United Kingdom was followed by members of NATO countries. The US went to such measures as to expel 60 Russian diplomats.
Russia denies the accusations and mirrored the expulsion of foreign diplomats.