US Ambassador to the United Nations Nikki Haley on Wednesday slammed Russia over the poison attack that left a former Russian double agent and his daughter comatose on a park bench last week.
The foreign minister believes there are global security ramifications for the assassination attempt on Sergei Skripl and his daughter Yulia in the United Kingdom last week.
Russia, which denies any involvement in the incident, condemned May's decision as unacceptable and vowed a swift response.
The four-nation statement is the fruit of British efforts to enlist worldwide support as it tries to hold Russia accountable for the March 4 attack that left the former Russian agent and his daughter in critical condition and a British police officer seriously ill.
"Either way Russian Federation must answer these accusations".
"The United States believes that Russian Federation is responsible for the attack on two people in the United Kingdom, using a military-grade nerve agent", US Ambassador Nikki Haley told an emergency council meeting.
Longer term, Ms Bishop believes Australia can play a role in a coordinated worldwide campaign against chemicalweapons.
In comments to reporters after he left the Foreign Ministry, Bristow said the crisis had arisen because of "the attempted murder of two people using a chemical weapon developed in Russian Federation and not declared by Russian Federation". "But we will always do what is necessary to defend ourselves, our allies, and our values against an attack of this sort, which is an attack not only on the United Kingdom, but upon the worldwide rules-based system, on which all countries, all countries including Russian Federation, depend for their safety and security".
Nikki Haley, the US ambassador to the United Nations, blamed Moscow for the attack at a U.N. Security Council emergency meeting Wednesday.
Speaking at the Conservative spring forum on Saturday, Theresa May said Britain "would never tolerate a threat to the life" of its citizens, or others in the country, from the Russian government.
UK Prime Minister Theresa May had pointed accussing fingers at Russian Federation for being responsible for the attack on Skripal and his daughter.
British Foreign Secretary Boris Johnson said Britain's quarrel was not with the Russian people but with the Kremlin.
The source of the nerve agent - which Britain says is Soviet-made Novichok - is unclear, as is the way it was administered.
London's Metropolitan Police said on Friday they believed the former associate of Berezovsky, Nikolai Glushkov, had been strangled to death and counter-terrorism officers would continue to lead the investigation.
Russian investigators said on Friday they had opened a criminal investigation into the attempted murder of Yulia Skripal and a murder investigation into Glushkov's death.
Swedish Foreign Minister Margot Wallstrom tweeted that she "forcefully reject (s) unacceptable and unfounded allegation" adding that "Russia should answer United Kingdom questions instead".
U.S. President Donald Trump said it looked as though the Russians were behind it.
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