Allegations 'absolutely insane': Russia reacts to UK's claim that it poisoned former spy

Russia with samples of the substance that was found at the crime scene."

"I can confirm again, Britain has not provided to Russia any information, any details that might shed some light on the situation," Zakharova said.

US SUPPORTS UK
Earlier, The White House threw its weight behind the UK in the case of a nerve agent attack on a former spy and his daughter, saying it shares the British assessment that Russia is responsible for the attack.

It also said that the UK's decision to expel 23 Russian diplomats in retaliation for the alleged attack was a "just response".

"The US stands in solidarity with its closest ally, the UK. The US shares the UK's assessment that Russia is responsible for the reckless nerve agent attack on a British citizen and his daughter, and we support the UK's decision to expel Russian diplomats as a just response," White House Press Secretary Sarah Sanders said.

At the United Nations headquarters in New York, US Ambassador Nikki Haley slammed Russia for the alleged use of nerve gas.

"Let me make one thing clear from the very beginning: the US stands in absolute solidarity with Great Britain. The US believes that Russia is responsible for the attack on two people in the UK using a military-grade nerve agent," Haley said during a special meeting of the UN Security Council convened at the request of Great Britain.