Therefore, after 6 months of attacks the Prime Minister is pressing for the Kremlin to be hit by fresh worldwide sanctions, after two Russian spies were named as suspects for Novichok attack in Salisbury.
Britain on Wednesday announced charges in absentia against two alleged Russian agents, Alexander Petrov and Ruslan Boshirov - names that are likely aliases.
"We have, however, obtained a European arrest warrant (EAW)", said CPS director of legal services, Sue Hemming.
Detectives believe the front door of Mr Skripal's Salisbury home was contaminated with the military-grade substance on Sunday March 4.
"We believe the first process of taking swabs removed the contamination, so low were the traces of Novichok in the room", Assistant Commissioner Neil Basu said.
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".
The attack sparked months of investigations by police officers and intelligence agencies. Sturgess later died from exposure to the agent. As a result, Basu said, police are not yet ready to bring charges in the second poisoning.
"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".
Charlie Rowley believes he found a box that he thought contained perfume in a charity bin on June 27.
Police said the nerve agent was concealed in a perfume bottle, which they called the "perfect delivery method" for smuggling a banned chemical across borders.
- Said that despite meticulous and painstaking searches, although unlikely, it is impossible to guarantee there are no other materials linked to the incidents in Salisbury.
She is expected to speak to other leaders over the next few days as she seeks to forge an worldwide alliance for further action against Russian Federation.
"So, as we found following the murder of Alexander Litvinenko, any formal extradition request in this case would be futile".
The Russian charge d'affaires in London was summoned to the Foreign Office to be told Britain wanted those responsible to be brought to justice.
The Russian embassy in the United Kingdom used its Twitter account to post a series of messages aimed at undermining the credibility of the United Kingdom investigation - including comparisons to the intelligence evidence used to build the case for the 2003 invasion of Iraq.
Police say the men, both about 40, flew from Moscow to London on Russian passports two days before the Skripals were poisoned on March 4. They spent weeks hospitalized in critical condition and are now recovering in a secret location for their own protection.
Milan, Paris, London, Amsterdam and Geneva were all visited in the lead-up to the attack on Skripal.
They said the pair had previously travelled to Britain under these identities and had legitimate reasons for their visas, though did not say what type of visa they had.
The events sparked a huge public health alert and plunged the UK Government's relations with the Kremlin into crisis. As police locked down the sleepy town of Salisbury, the Russians arrived back in Waterloo and took the underground to Heathrow Airport.
Speaking before Scotland Yard's statement, the Kremlin spokesman Dmitry Peskov said Moscow had repeatedly offered to cooperate with Britain in the Skripal investigation but had been met with "either refusal or silence".