Moscow [Russia], February 23 (ANI): Lyudmila Navalnaya, the mother of late Russian opposition leader Alexei Navalny, alleged that the Moscow authorities are “blackmailing” her to accept a secret burial of her son, The Washington Post reported. Navalnaya (69) said that she was allowed to see her son’s corpse for the first time since his mysterious death in prison. The authorities also issued her a death certificate saying he had died of “natural causes,” said Navalny’s press secretary, Kira Yarmysh. Navalny’s family and his team have claimed that the Kremlin critic was murdered and the Russian …