Who is Benjamin Halevi from The Eichmann Trial and what is their importance?

This is the judge who would typically have presided over a trial such as that against Eichmann. However, Halevi had been involved in a trial against a Hungarian Jew who traded trucks for Jews during the Holocaust, thereby saving the lives of many. The man had been accused of profiting from his association with Eichmann and Halevi found him guilty of that crime. Halevi's decision was eventually overturned but the Hungarian Jew was assassinated. Halevi was allowed to participate in the tribunal but officials feared that allowing him to preside would create the impression that Eichmann could not get a fair trial.