UK's claims questioned: doubts emerge about source of Salisbury's novichok

It was a historic moment largely ignored at the time by most of the world’s media and might have remained so but for the attack in Salisbury.At a ceremony last November at the headquarters of the world body responsible for the elimination of chemical weapons in The Hague, a plaque was unveiled to commemorate the destruction of the last of Russia’s stockpiles.Gen Ahmet Üzümcü, the director general of the Organisation for the Prohibition of Chemical Weapons (OPCW), which