Britain's prime minister, Theresa May, told parliament this week that two Russian intelligence officers were behind the attacks on double agent Sergei Skripal and his daughter, Yulia, in Salisbury, southern England.
Police and prosecutors said there is sufficient evidence to charge Alexander Petrov and Ruslan Boshirov with conspiring to murder Sergei Skripal and attempting to murder the ex-Russian spy, his daughter Yulia and Wiltshire Police Detective Sergeant Nick Bailey.
The charges deepen Britain's diplomatic feud with Moscow, which denies involvement in the attack on Skripal, a former Russian agent who had been convicted in his homeland of spying for Britain.
Prime Minister Theresa May said police and prosecutors now believe the attack on Sergei Skripal was carried out by two Russian military intelligence officers who were nearly certainly acting with the approval of senior Russian officials.
Prosecutors deem it futile to apply to Russian Federation for the extradition of the two men, but a European Arrest Warrant has been obtained and the authorities are also seeking the assistance of Interpol.
After the attack in March, Britain and its allies expelled dozens of Russian diplomats, prompting Moscow to respond in kind, while the USA later introduced sanctions in relation to the incident.
Britain produced an "unfounded and mendacious cocktail of facts" and is refusing to cooperate with Russia in investigating the poisoning "to unleash a disgusting anti-Russian hysteria and to involve other countries in this hysteria", Nebenzia said.
British police released CCTV images of two Russian men they said flew in to Britain for a weekend to commit murder.
The PM told MPs the United Kingdom would push for new sanctions against Russians responsible for cyber attacks, additional listings under the existing regime and promised to work with intelligence allies to "counter the threat posed by the GRU".
The Kremlin rejected the claims that Mr Putin was responsible and said that it was not going to investigate the suspects.
'Little justification' for prescribing diclofenac, researchers warn
The risk was apparent for both men and women of all ages and with low doses of diclofenac , the study in the BMJ reported . The researchers believe that people should finally recognize the potential health risks of the drug and reduce its usage.
In a joint statement reiterating their "outrage", the leaders said they were completely confident the attempted killing of former Russian double agent Sergei Skripal on British soil in March "was nearly certainly approved at a senior government level" in Russia.
"The police have today released CCTV footage of the two men which clearly places them in the immediate vicinity of the Skripals' house at 11.58am, which the police say was moments before the attack".
Mr Javid stopped short of naming President Vladimir Putin as being behind the orders but said "we all know what's at the top of the Russian government".
They were in hospital for weeks and have both now been discharged. Mr Corbyn said samples of the nerve agent involved should be sent to the Russian government so they could help to identify it.
"Inside the box was a bottle and applicator", Basu said.
The Skripals continue to be in an undisclosed location since their discharge from hospital after the attack.
He also confirmed that officers have now linked the attack on the Skripals to events in Amesbury less than four months later.
Two Russian nationals have been named over the novichok poisoning of Sergei and Yulia Skripal in Salisbury, Wiltshire.
Ms Sturgess, who died after being exposed to novichok, and Mr Rowley, were not targeted intentionally, May said, but rather were victims of "the reckless disposal of this agent".
Mrs May nonetheless sought to further ramp up worldwide pressure on Moscow, vowing to deploy "the full range of tools across our national security apparatus" to counter the threat posed by the GRU.