Weapons Watchdog Corrects Estimate of Nerve Agent Used in U.K. Attack Fifty to 100 milligrams — not grams — of nerve agent were used in the March 4 poisoning of Sergei Skripal in Salisbury, the Organization for the Prohibition of Chemical Weapons said. Share: Facebook Twitter Google+ Stumble Digg Email ThisBlogThis!Share to XShare to Facebook Related Posts:Caribbean Braces for Maria: ‘When Will All of the Hurricanes Stop?’A Much-Changed Icon, Aung San Suu Kyi Speaks About RohingyaRussian Court Refuses to Reveal Holocaust Hero’s FateIn Turkey’s New Curriculum, Ataturk, Darwin and Jihad Get Face-liftsBritish Columbia Proposes Ban on Corporate and Union Donations in ElectionsJohn W. Lewis, China Expert and Vietnam War Critic, Dies at 86