The OPCW Technical Secretariat released yesterday the findings of its investigation into the Salisbury affair. The report confirms the UK account of the nerve agent, without however specifically naming it in the unclassified executive summary; it also states that the agent was of a high purity, implying its manufacture by a state, but without naming Russia as the source (much in the same way as the UK’s own chemical weapons lab). Here are the key bits:
8. The results of analysis of biomedical samples conducted by OPCW designated laboratories demonstrate the exposure of the three hospitalised individuals to this toxic chemical.
9. The results of analysis of the environmental samples conducted by OPCW designated laboratories demonstrate the presence of this toxic chemical in the samples.
10. The results of analysis by the OPCW designated laboratories of environmental and biomedical samples collected by the OPCW team confirm the findings of the United Kingdom relating to the identity of the toxic chemical that was used in Salisbury and severely injured three people.
11. The TAV team notes that the toxic chemical was of high purity. The latter is concluded from the almost complete absence of impurities.
12. The name and structure of the identified toxic chemical are contained in the full classified report of the Secretariat, available to States Parties.
UPDATE: See also this letter from the UK National Security Advisor to the NATO Secretary-General, providing some previously classified intelligence about the Skripal poisoning.