Britain’s Foreign Minister Dominic Raab said he had summoned Russia’s ambassador to the UK to express his concern at the poisoning of Alexei Navalny.
Navalny, a prominent critic of President Vladimir Putin, was airlifted to Germany last month after collapsing on a flight from the Siberian city of Tomsk to Moscow. Germany has concluded he was poisoned with Novichok.
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“Today the UK summoned Russia’s Ambassador to the UK to register deep concern about the poisoning of Alexey @navalny,” Raab said on Twitter.
“It’s completely unacceptable that a banned chemical weapon has been used and Russia must hold a full, transparent investigation.”
Moscow says it has seen no evidence he was poisoned.
Read more: Germany, UK, US slam Russia and Putin over Alexei Navalny poisoning
Raab added that he was relieved to hear Navalny had been taken out of his medically induced coma.
In a separate statement, a foreign office spokesperson said: “There is a case here for Russia to answer. This took place on Russian soil, against a Russian citizen. They have international obligations to uphold.
“This is nothing short of an attack against the rules-based international system which keeps our societies safe.”
Read more: German FM threatens sanctions on Russia over Navalny poisoning
