OPCW: Boris Johnson calls chemical weapons use 'tragic reality' A special meeting of the OPCW member states is held in The Hague at the request of the UK. British Foreign Secretary Boris Johnson called for the meeting several weeks after the poisoning by an innervating agent of the former Russian spy Sergei Skripal and his daughter in Salisbury, England, a chemical attack - the first in Europe for decades - that London has attributed to Russia. IMAGES AND SOUNDBITES