The Kasztner affair was one of the most notorious court cases of Israel's early decades. It centered on a charge of libel against Malchiel Grunwald, who accused Israel Kasztner and others of collaborating with Nazi officials in Budapest during the weeks in which the great majority of Hungary's Jews were sent to their deaths in Auschwitz. In the years since the court case, historians have collected documents and testimonies that were unavailable to the judges in the case at the time