The UK still refuses to hand over samples of the alleged nerve agent to Russia for testing. This violates standard Organisation for the Prohibition of Chemical Weapons (OPCW) procedures. As Lavrov pointed out, the Convention Prohibiting the Use of Chemical Weapons states that where a country is suspected of using a chemical weapon, 10 days' notice must be given for the accused country to respond and the offending substance handed over. Instead, the British government just skipped over that part and plans to send the sample directly to the OPCW. It will be interesting to hear what they have to say, given that the OPCW last year verified that Russia has destroyed its entire chemical weapons stock and production capabilities (something the U.S., Israel, and the UK have yet to do.)
NATO Secretary General Stoltenberg has piped up to state that the Salisbury incident represents a challenge to NATO, characterizing it as "the first ever case of a nerve agent being used against a NATO country." His implied message was that this serves as grounds for the activation of Article 5 of the NATO treaty ('an attack on one member is an attack on all'.) Stoltenberg may want to get a show of hands from NATO members and their populations on how they feel about going to war with Russia.
Comment: We called it at the time: Mossad was also a more likely culprit in the assassination of Litvinenko:
Litvinenko - By Way Of Deception Part 1
Litvinenko: By Way Of Deception - Part 2
Litvinenko: By Way of Deception Part 3: The Apartheid State Of Israel