Before Russia invaded Ukraine, these fighters were neo-Nazis. They still are. Vladimir Putin’s February 2022 invasion of Ukraine has already resulted in millions of losers—chief among them the civilians who’ve been tortured, murdered, forced to become refugees, or forced to spend their days worrying about loved ones fighting Russia. But there are also winners: the neofascists whom Putin’s war has turned into heroes. For seven years, Western institutions have warned about Ukraine’s Azov Movement, which began as a neo-Nazi paramilitary group in 2014 and became notorious for its worldwide recruitment of extremists. Then came Russia’s invasion. Within months, Azov fighters...