Russian opposition leader Alexei Navalny may have been killed with a single punch to the heart - an old method used by the KGB - a human rights activist has claimed.
UK Foreign minister David Cameron said Wednesday that London had imposed sanctions on six officials at the head of the Siberian penal colony where Russian opposition figure Alexei Navalny died.
US President Joe Biden is "considering additional sanctions" on Moscow after the death of Russian opposition leader Alexei Navalny in an Arctic prison, he said Monday.