After a trial that lasted 18 months, the judge concluded that, by negotiating with Eichmann, failing to warn the many to save the few on the Kasztner train, and writing an affidavit after the war for Kurt Becher, Kasztner had "sold his soul to the devil". It was because of Kasztner's support for Becher that the Americans decided not to prosecute Becher at Nuremberg. Kasztner also wrote affidavits for SS officers Hans Jüttner, Dieter Wisliceny and Hermann Krumey.