According to the Convention IV, section III of the Hague Conference wealth of the occupied land couldn't be diverted to the occupying country, couldn't be used to supply the fighting army of the occupying country.michael mills wrote:It is clear that the purpose of reducing to a minimum the supply of food to the urban population of the occupied Soviet territory was to maximise the amount of food available to feed the German occupiers and to ship back to Germany to feed the civilian population there. The aim was not cause mass starvation of the Soviet population, although that might be a side effect.
So in fact we have here a textbook case of massive war crimes anyway.