WASHINGTON — Once known as a moderating influence within the Kremlin, former Russian President and current top Kremlin security adviser Dmitry Medvedev has recently emerged as a strikingly bellicose presence, using lengthy, hard-edged posts on the social media network Telegram to justify the invasion of Ukraine, revise 20th century history and threaten the West with nuclear war.
In a post from late July, Medvedev described Ukrainian President Volodymyr Zelensky as under the influence of “psychotropic substances.” In another, he said that American democracy was little more than the totalitarian dystopia described in “Animal Farm,” George Orwell’s famous novel.
“If someone does not agree, he will be deprived of rations, crushed or sent to the slaughterhouse,” Medvedev wrote. In the same post, he accused Americans (and their British…