International experts are due in the U.K., to test samples of the nerve agent used in the attempted murder of a spy and his daughter. How do they keep track of the world’s most toxic chemicals?
From the BBC:
After collecting samples of the poisons used on Sergei Skripal and his daughter Yulia, a team from the Organization for the Prohibition of Chemical Weapons (OPCW) will conduct tests, with results expected to take at least a fortnight.
The U.K. government says the substance used was Novichok – a group of nerve agents it says is “stockpiled” by Russia, which is “culpable” for the attack. It has dismissed Russia’s claim that the poison came from the U.K.’s Porton Down facility.
The work of the OPCW is carried out as part of an international control regime that governs what is, or is not, permissible as far as very toxic