A deadly nerve agent linked to the poisoning of four people in southern England could have been carried inside a lipstick tube-like container before being planted, a Russian scientist who developed the substance told Euronews. “The substance is very stable. It can be washed away by rain, it can evaporate under the sun. But it won’t decompose." Vladimir Uglev Scientist Vladimir Uglev, 72, took a leading role in developing A-234, a strain of the Novichok family of agents believed to have been used to poison former Russian spy Sergei Skripal and his daughter Yulia in Salisbury earlier this year. Like...