THE HAGUE - The British delegation to the global chemical weapons body on Wednesday dismissed a Russian proposal for a joint UK-Russia investigation into the Salisbury poisoning of former spy Sergei Skripal as 'perverse.' 'Is it a diversionary tactic, and yet more disinformation designed to evade the questions the Russians authorities must answer,' the UK delegation said in a tweet during a special meeting at the Organization for the Prohibition of Chemical Weapons.