Koch rejected his nomination in June of that year because it was, as he described it, "entirely negative", and was later given control of Reichskommissariat Ukraine instead. Hitler proposed Wilhelm Kube as an alternative, but this was rejected after Hermann Göring and Rosenberg deemed him too old for the position (Kube was then in his mid-fifties), and instead assigned him to Belarus. SA-Obergruppenführer Siegfried Kasche, the German envoy in Zagreb, was selected instead. Hamburg senator and SA General Wilhelm von Allwörden promoted himself to be nominated as the Commissioner for Economic Affairs for the Moscow area. Kasche's nomination was opposed by Heinrich Himmler, who considered Kasche's SA background as being a problem and characterized him to Rosenberg as "a man of the desk, in no wise energetic or strong, and an outspoken enemy of the SS".