The United States has not seen any indications that Russia is preparing to imminently use nuclear weapons, government officials said Friday, after President Joe Biden warned of the potential risk of "Armageddon" as Moscow continues its nuclear-saber rattling amid its war in Ukraine.Asked if new intelligence had prompted the president to deliver the stark warning, White House Press Secretary Karine Jean-Pierre told reporters, "No.""The president was speaking about concerns about (Russian President Vladimir) Putin's threats to use nuclear weapons," she said.Vedant Patel, principal deputy spok…READ FULL ARTICLE