The evidence showing that Russia was behind the nerve agent attack in Salisbury is "overwhelming," British Foreign Secretary Boris Johnson said Thursday.
Speaking to the BBC, Johnson said a sample of the nerve agent used in the attack that left former Russian spy Sergei Skripal and his daughter Yulia in critical but stable condition will be submitted to the Organization for the Prohibition of Chemical Weapons (OPCW) for examination.
Johnson's remarks came a day after the U.K. expelled 23 Russian diplomats described by Prime Minister Theresa May as "undeclared intelligence officers."
Russia has repeatedly denied any involvement in the incident but vowed to retaliate for Britain's expulsion decision.
Johnson said the attack was a "measure of Russian brutality and recklessness" as it aimed to harm not only Skripal but also anybody in the vicinity, adding that it "shocked and appalled not just this country but also so many of our partners around the world."
Stressing that he was "heartened" by the support for Britain from around the world, Johnson said "there is very little doubt in people's minds that this is a signature by the Russian state" in "deliberately using Novichok nerve agent developed by Russia to punish a Russian defector-as they would see it-in the run up to Vladimir Putin's election," set for Sunday.
"There is a global disgust at what had happened," he said.
Johnson also said that the Novichok nerve agent was developed by Russia alone during the Cold War, adding, "I am afraid the evidence is overwhelming that it is Russia."
UK'S JOHNSON SAYS CORRUPT PUTIN ALLIES MAY BE TARGETED
British foreign minister Boris Johnson suggested on Thursday that corrupt Russians who owe their wealth to their ties with President Vladimir Putin could be targeted by British police in retaliation for a nerve attack on a Russian ex-spy.
Britain said on Wednesday it was expelling 23 Russian diplomats over the Novichok nerve agent attack on Sergei Skripal and his daughter Yulia, who collapsed in the southern English city of Salisbury on March 4 and remain in a critical condition.
Moscow denies any involvement and is expected to retaliate. The foreign ministry there said on Thursday morning it was still working on its response to the British measures, labelling London's accusations against the Russian state "insane".
At home, the British government has been under pressure from lawmakers and media to show it was getting tough on Russia, with some experts saying that despite the rhetoric the response did not go far enough to bother Putin.
Foreign Secretary Boris Johnson defended the measures announced on Wednesday and suggested that there could be further consequences for rich Russians with assets in Britain.
"What people want to see is some of the very rich people who are directly associated with Vladimir Putin ... whose wealth can be attributed to their relationship with Vladimir Putin, it may be that the law agencies, that the police will be able to put unexplained wealth orders on them, to bring them to justice for their acts of gross corruption," Johnson told BBC television in an interview on Britain's response to the Skripal case.
In a later interview with BBC radio, he said Britain's National Crime Agency and Economic Crimes Unit were investigating a wide range of individuals, but declined to give names or details citing legal reasons.
Johnson said he had been heartened by strong expressions of support from the United States and other allies -- although it remains unclear whether there will be a coordinated international response to the Novichok attack.
U.S. Ambassador to the United Nations Nikki Haley said on Wednesday that her country believed Russia was responsible for the attack, adding it was a crime worthy of UN Security Council action.
That seems unlikely given that Russia, like Britain and the United States, is a permanent member of the Security Council.
Russia has repeatedly said Britain was refusing to provide a sample of the nerve agent used in Salisbury, and even close British ally France has said it wanted to see proof of Russian involvement before taking action.
Johnson said Prime Minister Theresa May would talk to French President Emmanuel Macron again on Thursday about the attack.
He also said Britain would send a sample of the nerve agent to the Organisation for the Prevention of Chemical Weapons for them to independently assess it.
