"The technical assistance requested by the British authorities to ‘independently confirm the identity of the nerve agent,’ unfortunately, lacks transparency and attests to UK’s arbitrary interpretation of the CWC [Chemical Weapons Convention]," the embassy’s press officer said.
The officer pointed out that the Russian approach to the Salisbury case was very clear with Moscow willing to find out what happened to the Russian citizens in Salisbury.
"Unfortunately, we have to note once again that no substantive answers have been provided by the British authorities to our numerous legitimate and comprehensive questions. Over the last five months the Embassy has sent a number of Notes Verbales requesting the FCO [UK Foreign and Commonwealth Office] to clarify as to how and by whom blood samples from Sergei and Yulia Skripal were collected; how it was documented; what was the procedure of sample collection; what assistance from the OPCW was requested; what information and material evidence the British side provided to the OPCW experts, etc," the embassy said.
The press officer added that the fact that the OPCW Technical Secretariat had not confirmed the country of origin of the nerve agent used during the Salisbury and Amesbury attacks had not prevented the United Kingdom from launching an anti-Russian campaign.
"Shortly after the Salisbury incident Russia proposed cooperation under paragraph 2, Article IX of the CWC and to hold a joint investigation into the incident. However, the British side has categorically declined," the embassy noted.
On Tuesday, the UK authorities revealed that they had invited OPCW experts to come back to the country in order to independently confirm the identity of the nerve agent.
The poisoning followed another similar case, involving former Russian intelligence agent Sergei Skripal and his daughter Yulia, who were found unconscious on a bench at a shopping center in Salisbury on March 4.
Reacting the accident, the United Kingdom and its allies have accused Moscow of having orchestrated the attack with what UK experts claim was the A234 nerve agent, without presenting any proof.
Russian authorities have strongly refuted the allegations as groundless.