Australian National University's interim vice-chancellor Rebekah Brown will appear before a royal commission, as witnesses continue to grapple with blurred lines in separating criticism of Israel from anti-Semitism.University bosses to front the inquiry have detailed bubbling tension amid threats to staff and students because of differing views about Palestine.Earlier this week, a former ANU student, known as Liat, told the Royal Commission on AntiSemitism and Social Cohesion that she felt fearful on campus and lost many of her friends because she was a Zionist."I spent the majority of my university education in an environment that was characterised by people justifying...