The intelligence they have passed on to Moscow Center is the most urgent and compelling evidence yet that Hitler will attack the Soviet Union very soon, in just a few days. Fitin does his best to explain, but Stalin is unmoved. He is particularly fixated on intelligence from Harro about a Luftwaffe order of battle. His fury stirs him to obscenity. Stalin scrawls across the report: “You can send your ‘source’ from the staff of the German air force to fuck his mother.”