Unions have called for a nationwide day of strikes and demonstrations and hope to repeat the large turnout seen on the first major protest on Jan 19
Former Russian President Medvedev said on Thursday "defeat of a nuclear power in a conventional war may trigger a nuclear war", referring to Russia's military campaign in Ukraine.
In a post on Telegram discussing NATO support for the Ukrainian military, Medvedev said: "Nuclear powers have never lost major conflicts on which their fate depends."