DR. NELTE: Was it never actually discussed that if one wanted to launch an attack on the Soviet Union, one would previously have to take diplomatic steps or else send a declaration of war, or an ultimatum?
KEITEL: Oh, yes, I discussed that. As early as the winter of 1940-1941, whenever there were discussions regarding the strength of the Russian forces on the demarcation line, that is, in December-January, I asked Hitler to send a note to the Soviet Union so as to bring about a cleaning-up of the situation, if I may express it so. I can add now that the first time he said nothing at all, and the second time he refused, maintaining that it was useless, since he would only receive the answer that this was an internal affair and that it was none of our business, or something like that. At any rate, he refused. I tried again, at a later stage, that is to say I voiced the request that an ultimatum should be presented before we entered upon an action, so that in some form the basis would be created for a preventive war, as we called it, for an attack.
DR. NELTE: You say "preventive war." When the final decisions were made, what was the military situation?
KEITEL: I am best reminded of how we, or rather the Army judged the situation, by a study or memorandum. I believe it is Document 872-PS, dated the end of January or the beginning of February, a report made by the Chief of the General Staff of the Army to Hitler on the state of operative and strategic preparations. And in this document I found the information we then had on the strength of the Red Army and other existing information known to us, which is dealt with fully in this document.
Apart from that, I have to say too that the intelligence service of the OKW, Admiral Canaris, placed at my disposal or at the Army's disposal very little material because the Russian area was closely sealed against German intelligence. In other words, there were gaps up to a certain point. Only the things contained in Document 872-PS were known.