Tensions deepened between Germany and Russia over the alleged poisoning of opposition figure Alexei Navalny , with Germany threatening sanctions and Russia accusing Berlin of delaying the investigation it demanded.
The Russian opposition leader and anti-corruption campaigner fell ill on a flight last month and was treated in a Siberian hospital before being evacuated to Berlin.
Germany said last week there was “unequivocal evidence” that President Vladimir Putin’s top foe had been poisoned using the Soviet-era nerve agent Novichok.
Britain said on Sunday that Russia had “a very serious set of questions to answer” and it was “clear” the Kremlin critic was poisoned with Novichok.
The Kremlin has denied responsibility for the attack and Foreign Minister Sergei Lavrov has said that Germany is yet to share any findings with Moscow’s prosecutors.