A related nerve agent was used in the Salisbury poisoning last month. The Foreign Office subsequently deleted a tweet that said the nerve agent was “produced in Russia”, saying the remarks had been truncated. He was caught before the murder of Kivelidi, but the nerve agent was later used in the killing. Russia’s ambassador to the UK has denied Moscow ever developed a nerve agent called novichok. But data from a nerve agent produced in Shikhany may show some differences between it and comparison samples possibly produced in labs outside Russia.

Source: The Guardian April 06, 2018 15:30 UTC