Britain and Russia have traded barbs in the UN Security Council over last month's Skripal poisoning.
At a meeting of the UN Security Council, Britain's Permanent Representative to the United Nations, as Karen Pierce reported on the latest updates in the investigation into the poisoning of former spy Sergei Skripal and his daughter Yulia in Salisbury.
Russia accused London of “lies and conjecture” and concealing information in its investigation, while Britain accused Moscow of being disingenuous.
"Russia continues to be asked to be involved in the UK's independent investigation..... As I said before, this is an arsonist-turned-firefighter trying to investigate his own fire," said the UK Ambassador to the United Nations Karen Pierce.
The Russian ambassador to the United Nations Vasiliy Nebenzia said the claims against his country were pure fairytales.
"When I listen to some of my colleagues, I am under the impression that this is no longer “Alice in Wonderland”. This is “Alice beyond the looking glass”. The truth doesn’t interest our western partner."
The clash came on the same day the Organisation for the Prohibition of Chemical Weapons (OPCW) rejected Russian claims that its laboratories had found a western military chemical agent in the poison used in Salisbury.
As it was reported earlier, Russian Foreign Minister Sergey Lavrov said on Saturday that experts from the Swiss Center for Radiological and Chemical-Biological Analysis, who examined the samples taken from the site of poisoning of the former intelligence officer and his daughter in Salisbury, came to conclusion that Sergei and Yulia Skripal were poisoned by a chemical substance BZ.
The samples also revealed the presence of a poison nerve agent A234, he said.
According to the Russian minister, in the report of the Organization for the Prohibition of Chemical Weapons, the term "Novichok" is not mentioned at all.