The fact is before even anybody thought about the Holocaust the plan to kill tens of millions of Russians was accepted and (partially) implemented.
By December 1940 the entire military and political leadership of the Third Reich was convinced that this was the last year in which they could approach the food question with any confidence. Nor was this simply a German problem.
All of the Western European territories which had fallen under German domination in 1940 had substantial net grain deficits. Unless additional sources of feed grain could be secured, the only solution was a mass slaughter of Europe's animal herds reminiscent of the famous 'pig massacre' of 1916.
On 2 May 1941 the State Secretaries representing all the major Ministerial agencies met in conference with General Thomas to draft plans for the occupation. The result is one of the most extraordinary bureaucratic records in the history of the Nazi regime.
In far more unvarnished language than was ever used in relation to the Jewish question, all of the major agencies of the German state agreed to a programme of mass murder, which dwarfed that which Heydrich was to propose to the Wannsee meeting nine months later.
According to General Thomas's secretariat the meeting concluded as follows:
1.) The war can only be continued, if the entire Wehrmacht is fed from Russia in the third year of the war.
2.) If we take what we need out of the country, there can be no doubt that many millions of people will die of starvation.
3.) The most important issues are the recovery and removal of oil seeds, oil cake and only then the removal of grain.
...
In November, Goering boasted to Count Ciano, the Italian Foreign Minister, that the starvation of 20 - 30 million Soviet citizens was an essential element of Germany's occupation policy.
... the guidelines issued by the OKW for the management of agriculture in the occupied Eastern territories — the so-called 'Green Book' — called for all of the industrial and urban centres of western Russia, including the wooded region between Moscow and Leningrad, to be cut off from their food sources.
As a result, the German occupation authorities were instructed to prepare themselves for a human catastrophe on an unprecedented scale. 'Many tens of millions of people in this area will become surplus to requirements and will die or will be forced to emigrate to Siberia.'
In case the occupying authorities should be moved to alleviate the situation, the guidelines reaffirmed the essential connection between mass starvation and the continuation of the German war effort:
Efforts to save the population from death by starvation by drawing on the surplus of the black earth regions can only be at the expense of the food supply to Europe. They diminish the staying power of Germany in the war and the resistance of Germany and Europe to the blockade. There must be absolute clarity about this... A claim by the [local] population on the German administration... is rejected right from the start.
The Wages of Destruction
btw
Yad Vashem is a private entity that doesn't follow the historical method in their research and is seriously biased on the side of Israeli nationism. In my opinion, their leadership is of questionable quality (Tommy Lapid - firebrand right-wing nationalist) bordering on ignorance (Yisrael Meir Lau.)