Novichok
Britain pointed the finger at Russian President Vladimir Putin on Thursday for a nerve agent attack on a former Russian spy in England.
Prime Minister Theresa May said Wednesday that two Russian spies carried out a nerve agent attack on a former colleague on British soil.
Washington it would impose fresh sanctions on Russia by the end of August after it determined that Moscow had used a nerve agent against a former Russian agent.
Novichok poisoning victim Charlie Rowley was discharged from a British hospital on Friday.
British police believe they have identified the suspects who carried out the Novichok nerve agent attack on a former Moscow double agent.
A British woman has died after being exposed to the nerve agent Novichok in western England, the Metropolitan Police said in a statement on Sunday.
In the southern English city of Salisbury counter-terrorism detectives stepped up their investigation into how people were exposed to the nerve agent Novichok.
Britain's counter-terrorism police chief said that there was no intelligence to indicate that a man and a woman exposed to a nerve agent in southern England.
The world's chemical arms watchdog on Thursday confirmed Britain's findings on the identity of a nerve agent used on a former Russian spy.
A Cold War-era scientist acknowledged on Tuesday he had helped create the nerve agent that Britain says was used to poison an ex-spy and his daughter.
Britain and its allies on Thursday blamed Moscow directly for a nerve agent attack on a double agent in England.
