Nearly 10 months after his invasion of Ukraine began, Russian President Vladimir Putin on Wednesday acknowledged that the conflict is “going to take a while,” as he also warned of the “increasing” threat of nuclear war. Speaking at a meeting of Russia’s Human Rights Council at the Kremlin, Putin said Moscow will fight by “all available means at our disposal,” in what he insists on calling a “special military operation,” but also said he saw no immediate need to mobilize more troops. “With regard to the protracted nature of the special military operation and its results, of course, it’s going...