Alexei Navalny's mother has been told to agree to a "secret" burial for the Putin critic within three hours, his spokeswoman says. If Lyudmila Navalnaya did not agree, he would be buried at the prison where he died a week ago, the spokeswoman said a Russian investigator had told her. On Thursday, Ms Navalnaya said she was made to sign a death certificate saying her son died of natural causes. Mr Navalny's widow has said he was killed by Russian authorities. The Kremlin has denied the allegations, calling Western reaction to the death "hysterical". Mr Navalny died in a prison...