During the Berne Trial of 1933-35 started when a Swiss Jewish group sued a Swiss Nazi group, Krasnov was asked by his fellow emigre Nikolai Markov to come to Berne to testify for the defendants about the alleged authenticity of "The Protocols of the Learned Elders of Zion", but he declined. Markov in turn was a member of the "Welt-Dienst", an international anti-Semitic society based in Erfurt, Germany and headed by a former German Army officer, Ulrich Fleischhauer whose efforts to promote "The Protocols of the Learned Elders of Zion" in Switzerland had caused the lawsuit in Berne. In his correspondence with Markov, Krasnov affirmed his belief in the authenticity of "The Protocols of the Learned Elders of Zion", but stated he was unwilling to be grilled by the lawyers for the plaintiffs.