Russian President Vladimir Putin's threat of using nuclear weapons in his invasion of Ukraine "could be a reality," Ukrainian President Volodymyr Zelensky said in a CBS interview that aired on Sunday. "I don't think he's bluffing," he added. Zelensky's comments come just days after Putin raised the specter of nuclear war during an address last week. In Russia, heated protests have erupted following Putin's mobilization announcement. More than 2,350 people have since been detained, according to an independent monitoring group, as Putin has made wartime punishments for various offenses more severe amid increasing opposition to the invasion.
