Several Einsatzgruppen leaders, including Ohlendorf, claimed at the trial to have received an order before Operation Barbarossa requiring them to murder all Soviet Jews.[158] To date no evidence has been found that such an order was ever issued.[159] German prosecutor Alfred Streim noted that if such an order had been given, post-war courts would only have been able to convict the Einsatzgruppen leaders as accomplices to mass murder.