Chancellor Olaf Scholz of Germany on Saturday accused Vice President JD Vance of unacceptably interfering in his country’s imminent elections on behalf of a party that has played down the atrocities committed by the Nazis 80 years ago. A day after Mr. Vance stunned the Munich Security Conference by telling German leaders to drop their so-called firewall and allow the hard-right Alternative for Germany, or AfD, to enter their federal government, Mr. Scholz accused Mr. Vance of effectively violating a commitment to never again allow Germany to be led by fascists who could repeat the horrors of the Holocaust. “A...