August 19 was the decisive day. Orders for the German submarines and pocket battleships to sail for British waters were being held up until word came from Moscow. The warships would have to get off at once if they were to reach their appointed stations by Hitlers target date for the beginning of the war, September 1 only thirteen days away. The two great army groups designated for the onslaught on Poland would have to be deployed immediately.
The tension in Berlin and especially on the Obersalzberg, where Hitler and Ribbentrop waited nervously for Moscows decision, was becoming almost unbearable. The Foreign Office dispatches and memoranda that day disclosed the jittery feelings in the Wilhelmstrasse. Dr. Schnurre reported that the discussions with the Russians on the trade agreement had ended the previous evening with complete agreement but that the Soviets were stalling on signing it. The signature, he said, was to have taken place at noon this day, August 19, but at noon the Russians had telephoned saying they had to await instructions from Moscow. It is obvious, Schnurre reported, that they have received instructions from Moscow to delay the conclusion of the treaty for political reasons. From Obersalzberg, Ribbentrop wired Schulenburg most urgent to be sure to report anything Molotov said or any sign of Russian intentions by telegram, but the only wire received from the ambassador during the day was the text of a denial by Tass, the Soviet news agency, in Moscow that the negotiations between the Russian and Anglo-French military delegations had become snarled over the Far East. However, the Tass dementi added that there were differences between the delegations on entirely different matters. This was a signal to Hitler that there was still time and hope.
And then at 7:10 P.M. on August 19 came the anxiously awaited telegram:
The Soviet Government agree to the Reich Foreign Minister coming to Moscow one week after the announcement of the signature of the economic agreement. Molotov stated that if the conclusion of the economic agreement is made public tomorrow, the Reich Foreign Minister could arrive in Moscow on August 26 or 27.
Molotov handed me a draft of a nonaggression pact.
A detailed account of the two conversations I had with Molotov today, as well as the text of the Soviet draft, follows by telegram at once.
SCHULENBURG
The first talk in the Kremlin, which began at 2 P.M. on the nineteenth and lasted an hour, did not, the ambassador reported, go very well. The Russians, it seemed, could not be stampeded into receiving Hitlers Foreign Minister. Molotov persisted in his opinion, Schulenburg wired, that for the present it was not possible even approximately to fix the time of the journey since thorough preparations would be required . . . To the reasons I repeatedly and very emphatically advanced for the need of haste, Molotov rejoined that, so far, not even the first step the concluding of the economic agreement had been taken. First of all, the economic agreement had to be signed and published, and achieve its effect abroad. Then would come the turn of the nonaggression pact and protocol.
Molotov remained apparently unaffected by my protests, so that the first conversation closed with a declaration by Molotov that he had imparted to me the views of the Soviet Government and had nothing to add to them.
But he had something, shortly.
Hardly half an hour after the conversation had ended, Schulenburg reported, Molotov sent me word asking me to call on him again at the Kremlin at 4:30 P.M. He apologized for putting me to the trouble and explained that he had reported to the Soviet Government.
Whereupon the Foreign Commissar handed the surprised but happy ambassador a draft of the nonaggression pact and told him that Ribbentrop could arrive in Moscow on August 26 or 27 if the trade treaty were signed and made public tomorrow.
Molotov did not give reasons, Schulenburg added in his telegram, for his sudden change of mind. I assume that Stalin intervened.
The assumption was undoubtedly correct. According to Churchill, the Soviet intention to sign a pact with Germany was announced to the Politburo by Stalin on the evening of August 19. [Hmm. Excerpts now citing one another. Homer] A little earlier that day between 3 P.M. and 4:30 P.M. it is clear from Schulenburgs dispatch, he had communicated his fateful decision to Molotov.
Exactly three years later, in August 1942, in the early hours of the morning, as Churchill later reported, the Soviet dictator gave to the British Prime Minister, then on a mission to Moscow, some of the reasons for his brazen move.
We formed the impression [said Stalin] that the British and French Governments were not resolved to go to war if Poland were attacked, but that they hoped the diplomatic line-up of Britain, France and Russia would deter Hitler. We were sure it would not. How many divisions, Stalin had asked, will France send against Germany on mobilization? The answer was: About a hundred, He then asked: How many will England sent? The answer was: Two, and two more later. Ah, two, and two more later, Stalin had repeated, Do you know, he asked, how many divisions we shall have to put on the Russian front if we go to war with Germany? There was a pause. More than three hundred.
In his dispatch reporting the outcome of his conversations with Molotov on August 19, Schulenburg had added that his attempt to induce the Foreign Commissar to accept an earlier date for Ribbentrops journey to Moscow was, unfortunately, unsuccessful.
But for the Germans it had to be made successful. The whole timetable for the invasion of Poland, indeed the question of whether the attack could take place at all in the brief interval before the autumn rains, depended upon it. If Ribbentrop were not received in Moscow before August 26 or 27 and then if the Russians stalled a bit, as the Germans feared, the target date of September 1 could not be kept.
William L. Shirer, The Rise and Fall of the Third Reich
On the evening of August 19 Stalin announced to the Politburo his intention to sign a pact with Germany.
Winston S. Churchill, The Gathering Storm
German fleet update at reply #2.
Nazi-Soviet pact update at reply #4.