Rabbi Dov Gruzman (left) pictured with former Jewish US Ambassador Ronald Lauder in 2008. A Chabad rabbi was attacked after presiding over a public Chanukah menorah lighting in Vienna. The assailant who punched Rabbi Dov Gruzman and bit off part of the rabbi’s finger following the lighting Saturday night in Stephansplatz Square was Muslim, according to reports. Gruzman, principal of the Lauder...